purify liquid的用法和樣例：
例句
- Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.
設計併合成了一類新型末端氰基取代含氟二苯乙炔類液晶。 - The development on the process for the recycling of waste liquid coming from the purification of acetylene was introduced as well as its application situation.
介紹了電石法乙炔裝置清凈廢液的循環回用工藝技術的開發及應用情況。
