{"id":1113,"date":"2020-07-08T02:25:17","date_gmt":"2020-07-07T18:25:17","guid":{"rendered":"https:\/\/www.study-together.com\/edu\/?page_id=1113"},"modified":"2020-11-02T23:13:28","modified_gmt":"2020-11-02T15:13:28","slug":"estimation-in-measurements","status":"publish","type":"page","link":"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/estimation-in-measurements\/","title":{"rendered":"10. \u91cf\u5ea6\u65b9\u9762\u7684\u4f30\u8a08 (Estimation in measurements)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1113\" class=\"elementor elementor-1113\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-925bb0c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"925bb0c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-85098ff\" data-id=\"85098ff\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-37550f5 elementor-widget elementor-widget-text-editor\" data-id=\"37550f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>10. \u91cf\u5ea6\u4f30\u8a08<\/h2><p>\u5728\u9032\u884c \u91cf\u5ea6\u4f30\u8a08 \u7684\u6642\u5019\uff0c\u5176\u4e2d\u4e00\u500b\u5341\u5206\u91cd\u8981\u7684\u90e8\u4efd\u662f\u4f30\u8a08\u503c\u8207\u5be6\u969b\u503c\u7684\u5dee\u8ddd\u3002\u9019\u5dee\u8ddd\u6211\u5011\u7a31\u4e4b\u70ba \u8aa4\u5dee\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-087a8e0 elementor-widget elementor-widget-text-editor\" data-id=\"087a8e0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>10.1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u91cf\u5ea6\u7684\u8aa4\u5dee (Error of Measurement)<\/h2><p>\u91cf\u5ea6\u7684\u8aa4\u5dee\u4fc2\u6307\u91cf\u5ea6\u5f97\u4f86\u7684\u7d50\u679c(\u91cf\u5ea6\u503c measured value)\u8207\u5be6\u969b\u6578\u503c(true value)\u4e4b\u9593\u7684\u5dee\u8ddd\u3002<\/p><p>\u4f8b1\uff1a \u5047\u8a2d\u4e00\u8f1b\u8eca\u7684\u5be6\u969b\u9577\u5ea6\u662f5.15m\uff0c\u82e5\u91cf\u5ea6\u503c\u662f5.14m\uff0c\u5247<\/p><p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8aa4\u5dee = 5.15 \u2013 5.14 = 0.01m<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8adf554 elementor-widget elementor-widget-text-editor\" data-id=\"8adf554\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>10.2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u91cf\u5ea6\u7684\u6700\u5927\u8aa4\u5dee (Maximum Error of Measurement)<\/h2><p>\\(\\quad \\quad \u91cf\u5ea6\u7684\u6700\u5927\u8aa4\u5dee = \\dfrac{\u6e96\u78ba\u5ea6}{2} \\)<\/p><ul><li>\u6e96\u78ba\u5ea6 (Precision Level) \u2500\u2500\u91cf\u5ea6\u5de5\u5177\u4e0a\u5169\u500b\u9023\u7e8c\u523b\u5ea6\u4e4b\u9593\u6240\u8868\u793a\u7684\u91cf<\/li><\/ul><p>\u4f8b2\uff1a\u00a0\u00a0 \u4e00\u628a\u76f4\u5c3a\u7684\u6700\u5c0f\u523b\u5ea6\u662f1mm\uff0c\u6c42\u5176\u6e96\u78ba\u5ea6\u53ca\u91cf\u5ea6\u7684\u6700\u5927\u8aa4\u5dee\u3002<\/p><p>\u89e3\uff1a\u00a0<\/p><ul><li style=\"list-style-type: none;\"><ul><li>\u6e96\u78ba\u5ea6\u70ba1mm\u3002<\/li><li>\\(\u6700\u5927\u8aa4\u5dee = \\dfrac{\u6e96\u78ba\u5ea6}{2} = \\dfrac{1}{2} = 0.5mm \\)<\/li><\/ul><\/li><\/ul><h3>10.2.1 \u7d2f\u7a4d\u8aa4\u5dee (Accumulative Error)<\/h3><p>\u5728\u5f88\u591a\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u9700\u8981\u5169\u500b\u6216\u4ee5\u4e0a\u7684\u91cf\u5ea6\u503c\u65b9\u53ef\u5f97\u51fa\u6240\u8981\u6c42\u7684\u91cf\u5ea6\u3002<\/p><p>\u4f8b3\uff1a\u00a0\u00a0\u00a0 \u5beb\u51fa\u8a08\u7b97\u4e00\u500b\u9577\u65b9\u5f62\u9762\u7a4d\u6642\u9700\u8981\u91cf\u5ea6\u7684\u503c\u3002<br \/>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0 \u8981\u91cf\u5ea6\u7684\u662f\u9577\u65b9\u5f62\u7684\u9577\u53ca\u6ff6\u3002<\/p><p>\u9019\u4e9b\u91cf\u5ea6\u503c\u7684\u8aa4\u5dee\uff08\u5373\u9577\u53ca\u6ff6\u7684\u91cf\u5ea6\u8aa4\u5dee\uff09\u6703\u5728\u8a08\u7b97\u4e2d\u201c\u7d2f\u7a4d\u201d\u4e0b\u4f86\u3002<\/p><p>\u7d2f\u7a4d\u8aa4\u5dee \uff1d \u201c\u6700\u5927\u503c \u2013 \u91cf\u5ea6\u503c\u201d \u8207 \u201c\u91cf\u5ea6\u503c \u2013 \u6700\u5c0f\u503c\u201d \u4e2d\u8f03\u5927\u7684\u4e00\u500b<\/p><p>\u4f8b4\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c0f\u660e\u4ee5\u4e00\u628a\u5169\u500b\u9023\u7e8c\u523b\u5ea6\u4e4b\u9593\u8ddd\u96e2\u70ba1mm\u7684\u76f4\u5c3a\u91cf\u5ea6\u9577\u65b9\u5f62ABCD\u7684\u908a\u9577\u3002\u9577\u53ca\u6ff6\u5206\u5225\u70ba6.4cm\u53ca3.2cm\u3002\u5982\u679c\u4ee5\u6240\u5f97\u7684\u91cf\u5ea6\u503c\u8a08\u7b97\u8a72\u9577\u65b9\u5f62\u7684\u9762\u7a4d\uff0c\u6c42\u7d2f\u7a4d\u8aa4\u5dee\uff1f<\/p><p>\u89e3\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p><table><tbody><tr><td width=\"77\">\u00a0<\/td><td width=\"102\"><p>\u91cf\u5ea6\u503c(cm)<\/p><\/td><td width=\"102\"><p>\u6700\u5927\u503c(cm)<\/p><\/td><td width=\"102\"><p>\u6700\u5c0f\u503c(cm)<\/p><\/td><\/tr><tr><td width=\"77\"><p>\u9577\u5ea6<\/p><\/td><td width=\"102\"><p>6.4<\/p><\/td><td width=\"102\"><p>6.45<\/p><\/td><td width=\"102\"><p>6.35<\/p><\/td><\/tr><tr><td width=\"77\"><p>\u95ca\u5ea6<\/p><\/td><td width=\"102\"><p>3.2<\/p><\/td><td width=\"102\"><p>3.25<\/p><\/td><td width=\"102\"><p>3.15<\/p><\/td><\/tr><\/tbody><\/table><p>\u4ee5\u91cf\u5ea6\u503c\u8a08\u7b97\u7684\u9762\u7a4d =6.4 \u00d73.2 = 20.48cm<sup>2<\/sup><\/p><p>\u6700\u5927\u7684\u9762\u7a4d = \u4ee5\u6700\u5927\u503c\u8a08\u7b97\u7684\u9762\u7a4d = 6.45 \u00d73.25 = 20.9625cm<sup>2<\/sup><\/p><p>\u6700\u5c0f\u7684\u9762\u7a4d = \u4ee5\u6700\u5c0f\u503c\u8a08\u7b97\u7684\u9762\u7a4d = 6.35 \u00d73.15 = 20.0025cm<sup>2<\/sup><\/p><p>\u2235\u00a0\u00a0\u00a0 20.9625 &#8211; 20.48 = 0.4825cm<sup>2<\/sup>\u00a0<br \/>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 20.48 \u2013 20.0025 = 0.4775cm<sup>2<br \/><\/sup>\u2234\u00a0\u00a0\u00a0 \u7d2f\u7a4d\u8aa4\u5dee = 0.4825 cm<sup>2<\/sup><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-8694c68 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8694c68\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-6753432\" data-id=\"6753432\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0108bb0 elementor-widget elementor-widget-text-editor\" data-id=\"0108bb0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/congruence-and-similarity\/\"><i class=\"far fa-arrow-alt-circle-left\" aria-hidden=\"true\"><\/i> \u5168\u7b49\u53ca\u76f8\u4f3c<\/a>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-7b39819\" data-id=\"7b39819\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-289e1f5\" data-id=\"289e1f5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-883fadf elementor-widget elementor-widget-text-editor\" data-id=\"883fadf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: right;\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/area-and-volume\/\">\u9762\u7a4d\u53ca\u9ad4\u7a4d <i class=\"far fa-arrow-alt-circle-right\" aria-hidden=\"true\"><\/i><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-ccb3a7d\" data-id=\"ccb3a7d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-429c8c9 elementor-widget elementor-widget-sidebar\" data-id=\"429c8c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"sidebar.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"sidebar-box widget-oceanwp-custom-menu custom-menu-widget clr\"><style type=\"text\/css\">.ocean_custom_menu-2 > ul > li > a, .custom-menu-widget .ocean_custom_menu-2 .dropdown-menu .sub-menu li a.menu-link{font-size:16px;line-height:17px;}.custom-menu-widget .ocean_custom_menu-2.oceanwp-custom-menu > ul.click-menu .open-this{font-size:16px;}<\/style><h4 class=\"widget-title\">\u4e2d\u4e00\u6578\u5b78\u3010\u76ee\u9304\u3011<\/h4><div class=\"oceanwp-custom-menu clr ocean_custom_menu-2 left dropdown-hover\"><ul id=\"menu-form1mathstopics\" class=\"dropdown-menu sf-menu\"><li  id=\"menu-item-928\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-928\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/directed-numbers\/\" class=\"menu-link\">1. \u6709\u5411\u6578 (Directed Numbers)<\/a><\/li>\n<li  id=\"menu-item-929\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-929\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/algebraic-expressions-equations\/\" class=\"menu-link\">2. \u4ee3\u6578\u5f0f\u548c\u65b9\u7a0b\u5f0f (Algebraic Expressions &#038; Equations)<\/a><\/li>\n<li  id=\"menu-item-995\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-995\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/laws-of-integral-indices\/\" class=\"menu-link\">3. \u6307\u6578\u53ca\u9032\u5236 (Laws of integral indices)<\/a><\/li>\n<li  id=\"menu-item-1000\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1000\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/polynomials\/\" class=\"menu-link\">4. \u591a\u9805\u5f0f (Polynomials)<\/a><\/li>\n<li  id=\"menu-item-1043\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1043\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/using-percentages\/\" class=\"menu-link\">5. \u767e\u5206\u6cd5 (Using percentages)<\/a><\/li>\n<li  id=\"menu-item-1053\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1053\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/approximate-values-estimation\/\" class=\"menu-link\">6. \u8fd1\u4f3c\u503c\u8207\u4f30\u7b97 (Approximate values &#038; estimation)<\/a><\/li>\n<li  id=\"menu-item-1071\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1071\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/introduction-to-geometry\/\" class=\"menu-link\">7. \u5e7e\u4f55\u7c21\u4ecb (Introduction to Geometry)<\/a><\/li>\n<li  id=\"menu-item-1093\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1093\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/symmetry-and-transformation\/\" class=\"menu-link\">8. \u5c0d\u7a31\u53ca\u8b8a\u63db (Symmetry and Transformation)<\/a><\/li>\n<li  id=\"menu-item-1109\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1109\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/congruence-and-similarity\/\" class=\"menu-link\">9. \u5168\u7b49\u53ca\u76f8\u4f3c (Congruence and Similarity)<\/a><\/li>\n<li  id=\"menu-item-1120\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1120\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/estimation-in-measurements\/\" class=\"menu-link\">10. \u91cf\u5ea6\u65b9\u9762\u7684\u4f30\u8a08 (Estimation in measurements)<\/a><\/li>\n<li  id=\"menu-item-1136\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1136\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/area-and-volume\/\" class=\"menu-link\">11. \u9762\u7a4d\u53ca\u9ad4\u7a4d (Area and Volume)<\/a><\/li>\n<li  id=\"menu-item-1150\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1150\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/introduction-to-coordinates\/\" class=\"menu-link\">12.   \u5750\u6a19\u7c21\u4ecb (Introduction to Coordinates)<\/a><\/li>\n<li  id=\"menu-item-1164\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1164\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/introduction-to-statistics\/\" class=\"menu-link\">13.  \u7d71\u8a08\u7c21\u4ecb (Introduction to Statistics)<\/a><\/li>\n<li  id=\"menu-item-16138\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-16138\"><a href=\"https:\/\/www.study-together.com\/edu\/secondary\/exam_papers\/\" class=\"menu-link\">*** \u521d\u4e2d\u8a66\u5377 \/ \u8a66\u984c\u5eab ***<\/a><\/li>\n<\/ul><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>10. \u91cf\u5ea6\u4f30\u8a08 \u5728\u9032\u884c \u91cf\u5ea6\u4f30\u8a08 \u7684\u6642\u5019\uff0c\u5176\u4e2d\u4e00\u500b\u5341\u5206\u91cd\u8981\u7684\u90e8\u4efd\u662f\u4f30\u8a08\u503c\u8207\u5be6\u969b\u503c\u7684\u5dee\u8ddd\u3002\u9019\u5dee\u8ddd\u6211\u5011\u7a31\u4e4b\u70ba \u8aa4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":923,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-1113","page","type-page","status-publish","hentry","entry"],"yoast_head":"<!-- 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max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.study-together.com\/edu\/secondary\/form1_maths\/estimation-in-measurements\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u91cf\u5ea6\u65b9\u9762\u7684\u4f30\u8a08 (Estimation in measurements) &#187; \u4e2d\u4e00\u6578\u5b78 &#187; \u9f4a\u9f4a\u6eab\" \/>\n<meta property=\"og:description\" content=\"\u91cf\u5ea6\u4f30\u8a08 &gt;&gt; \u56e0\u70ba\u91cf\u5ea6\u5de5\u5177\u7684\u7cbe\u6e96\u5ea6\u6240\u9650\uff0c\u91cf\u5ea6\u51fa\u4f86\u7684\u5f80\u5f80\u53ea\u4fc2\u4e00\u500b\u4f30\u8a08\u3002\u800c\u4f30\u8a08\u6703\u5e36\u4f86\u8aa4\u5dee\u3002\u91cf\u5ea6\u7684\u8aa4\u5dee\u4fc2\u6307\u91cf\u5ea6\u5f97\u4f86\u7684\u7d50\u679c(\u91cf\u5ea6\u503c measured value)\u8207\u5be6\u969b\u6578\u503c(true 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