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熔化和凝固是学习物态变化最具代表性的内容，掌握好这节内容的学习和研究方法，对后几种物态变化的学习是很有帮助的．如何利用图象帮助我们学习熔化和凝固呢？下面我们就从晶体的熔化和凝固国象（见国1和图2）来了解学习和研究的方法．先对图象曲线逐段进行分析，例如图1中的
Melting and solidification are the most representative contents of studying the change of state of matter. Mastering the learning and research methods of this section is very helpful to the study of the changes of the following states of matter. How to use images to help us learn to melt and solidify? Next we will learn about the methods of learning and research from the melting and solidification of crystals (see Country 1 and Figure 2). First analyze the image curve segment by segment, for example in Figure 1.