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什么样的毛衣不会缩水？
不知道你有没有过这样的烦恼，新买回来的毛衣丢进洗衣机里洗一次后，再拿出来就变成了童装，根本没法儿穿了。毛衣为什么爱缩水？拿什么拯救你爱缩水的毛衣？（出品：科普中国-星空计划）
科普中国 星空计划159/251
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