In the dry - combed process, backwashing occurs after combing.在干式精梳过程中, 复洗是在精洗之后.Backwashing is one of the Methods: To maintain a filter bed clean.反冲洗是保持滤床清洁的方法之一....
Keep your mind awake and active; that's the only youth elixir.保持头脑清醒和灵活便是保持年轻的唯一灵丹妙药.Another version has Chang'e drink the elixir to keep it from Pang Meng.另一种说法是, 嫦娥 为了不让长生药落入逄蒙之手,便自己喝了下去.I told you that I...
随后,叠氮化脒异构化生成氨基四氮杂茂.Guanyl azide is then isomerized to aminotetrazole.它们与氨反应形成脒.They will react with ammonia to form amidines.目的探讨杀虫脒的利多卡因样作用.Objective To study the lidocaine - like actions of chlordimeform....