．据说，科学界已经研制出一种衣料，其纤维中添加了微胶囊，这种

．据说，科学界已经研制出一种衣料，其纤维中添加了微胶囊，这种微胶囊中所含的物质在常温下呈液态，在温度降低时会很快变成固态．人们穿上用这种衣料做成的衣服，在气温降低时由于____________，会使人倍感温暖．

答案

凝固放热

解析:略

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．据说，科学界已经研制出一种衣料，其纤维中添加了微胶囊，这种

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