海词手机词典

Collagen modified acrylic fibre was prepared with collagen extracted from leather wastes as raw material which was grafted with acrylonitri le and mixed and spinned together with poly acrylonitrile.

播放读音 播放读音

以上内容独家创作,受著作权保护,侵权必究

海词词典,十七年品牌