More often, all of the materials exposed to the etchant have a finite etch rate.通常, 所有暴露在刻蚀剂中的材料都具有一定的刻蚀速率.More often , all of the materials etchant have a finite etch rate.剂中的材料都具有一定的刻蚀速率.Hydrofluoric acid of Porcelain ...
In most of the residence halls we visited, rules prohibit disorderly conduct.在我们走访的学生宿舍里,大多明令禁止胡作非为。Prohibit the sale of alcoholic beverages.禁止出售含酒精的饮料.Legislation can quickly prohibit pesticide use.法律很快就会禁止使用杀菌剂....
Online gaming allows players from around the world to challenge each other.网络游戏使得全球的玩家可以相互较量。The law allows doctors to prescribe contraception to the under 16s.法律允许医生给16岁以下未成年人开避孕药。Find the exact grip that allows you to ...