例句
It is prepared by reacting anhydrous ammonia and carbon dioxide gas under very high pressure in the presence of a suitable catalyst.
它是在某种催化剂参与下，由无水氨和二氧化碳气体在高压条件下反应生成的。
During ionic polymerization and group transfer polymerization, the absolute need to be transferred to the reactor anhydrous reagents.
在进行离子型聚合和基团转移聚合时，需要将绝对无水试剂转移到反应装置。
Such vegetal essences as yeast and peony and anhydrous caffeine can constantly take effect in sensitive eye skin and restrain the production of melanin.
酵母精华、牡丹精华等植物精华与无水咖啡因能持续作用于敏感的眼部肌肤，同时抑制黑色素的生成。