例句與造句

1. Because of its high reactivity with oxygen, nitrogen, and some other gases, titanium filaments are applied in titanium sublimation pumps as scavengers for these gases.
2. In systems which need to be opened to air for maintenance, a titanium sublimation pump provides similar functionality to flashed getters, but can be flashed repeatedly.
3. It's difficult to find titanium sublimation pump in a sentence. 用titanium sublimation pump造句挺難的