名词
中文翻译：相变
同义词：
['phase transition', 'phase transition process']
例句：
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1. The material undergoes a phase change when it is heated.
这种材料在加热时会发生相变。
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2.During the phase change, the water turns into ice.
在相变过程中，水会变成冰。
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3.The phase change in the material affects its properties significantly.
材料的相变显著地影响其性质。