etching reaction造句

例句与造句

1. Growth rates above 2 micrometres per minute produce polycrystalline silicon, and negative growth rates ( etching ) may occur if too much hydrogen chloride byproduct is present . ( In fact, hydrogen chloride may be added intentionally to etch the wafer . ) An additional etching reaction competes with the deposition reaction:
2. It's difficult to find etching reaction in a sentence. 用etching reaction造句挺难的