(资料图片仅供参考)
解答：
1、一种原料是桑蚕丝，一种是涤纶。如果感觉不到，就用80倍的放大镜看，或者抽一根丝烧。蚕丝可以烧成灰，涤纶可以烧成小球。
本文到此结束，希望对大家有所帮助。
(资料图片仅供参考)
解答：
1、一种原料是桑蚕丝，一种是涤纶。如果感觉不到，就用80倍的放大镜看，或者抽一根丝烧。蚕丝可以烧成灰，涤纶可以烧成小球。
本文到此结束，希望对大家有所帮助。
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