4.Hydrogen combines chemically with oxygen to form water.
氢和氧合成为水。
5.Chemically treated hair can become dry and brittle.
经过理的头发会变得焦脆。
6.Many smokers who are chemically addicted to nicotine cannot cut down easily.
许多有尼古丁瘾的抽烟人不容易把烟戒掉。
7.This paper describes a new crosshatching technology on PI flexible substrate, using chemically etching method.
本一种在挠性聚酰亚胺基材上开窗口的新工艺。
8.The carbon-fluorine single bond is among the strongest known and results in PFA being virtually chemically insert and nonwettable by fluids such as water.
理的。
地；
一种在挠性聚酰亚胺基材上开窗口的新工艺。
