海词手机词典

2.Pitch based activated carbon fibers (PACF) have been prepared by activating pitch based carbon fiber (PCF) with H 2O and CO 2 as activating agent and ammonium salt mixture as impregnant.

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