海词手机词典

A study was made on its modification, that is the grafting copolymer and cationic starch of canna starch.The result shows that some properties of canna starch are superior to those of corn starch.

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