海词手机词典

Cement mortar was modified with soap- free emulsion VAC(vinylac et ic acid)/DMC(methacyloy loxyethyl trimethylammohium chloride)/VHE(vinyl- 4- hy drobutyl- ether)copolymerization. The effect of VAC/DMC/VHE on the strength of cement mortar was studied.

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