變更

'''复杂性'''三种传热方式常常同时并存

[[File:U=2188898388,3017413696&fm=26&gp=0.gif|缩略图|热传递[https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fhelp.solidworks.com%2F2011%2Fchinese-simplified%2Fsolidworks%2Fcosmosxpresshelp%2Fallart%2Fart_local%2Fsimulationxpress%2Fconvection.gif&refer=http%3A%2F%2Fhelp.solidworks.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1620137309&t=1b1f050a0ea8b25fd52d7ba1b9874f08 图片来源百度网][https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fhelp.solidworks.com%2F2011%2Fchinese-simplified%2Fsolidworks%2Fcosmosxpresshelp%2Fallart%2Fart_local%2Fsimulationxpress%2Fconvection.gif&refer=http%3A%2F%2Fhelp.solidworks.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1620137309&t=1b1f050a0ea8b25fd52d7ba1b9874f08 原图链接]]]

'''传递极限''':温度相等