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Law\uff09\u8868\u793a\u4e3a\uff1a<\/p>\n<p><i>q = -k \\(\\frac{dT}{dx}\\)<\/i><\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<p><o1><\/p>\n<li><i>q\uff1a<\/i> \u70ed\u6d41\u5bc6\u5ea6\uff08W\/m<sup>2<\/sup>\uff09<\/li>\n<li><i>k\uff1a<\/i> \u6750\u6599\u7684\u5bfc\u70ed\u7cfb\u6570\uff08W\/m\u00b7K\uff09<\/li>\n<li><i>\\(\\frac{dT}{dx}\\)\uff1a<\/i> \u6e29\u5ea6\u68af\u5ea6\uff08K\/m\uff09<\/li>\n<p><\/o1><\/p>\n<p>\u5bf9\u4e8e\u5bf9\u6d41\uff0c\u725b\u987f\u51b7\u5374\u5b9a\u5f8b\uff08Newton\u2019s Law of Cooling\uff09\u8868\u793a\u4e3a\uff1a<\/p>\n<p><i>q = hA(T_s &#8211; T_{\\infty})<\/i><\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<p><o1><\/p>\n<li><i>q\uff1a<\/i> \u70ed\u6d41\u91cf\uff08W\uff09<\/li>\n<li><i>h\uff1a<\/i> \u5bf9\u6d41\u6362\u70ed\u7cfb\u6570\uff08W\/m<sup>2<\/sup>\u00b7K\uff09<\/li>\n<li><i>A\uff1a<\/i> \u8868\u9762\u79ef\uff08m<sup>2<\/sup>\uff09<\/li>\n<li><i>T_s\uff1a<\/i> \u7269\u4f53\u8868\u9762\u6e29\u5ea6\uff08K\uff09<\/li>\n<li><i>T_{\\infty}\uff1a<\/i> 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