例句與造句

1. In gas chromatography, the " mobile phase " ( or " moving phase " ) is a carrier gas, usually an inert gas such as helium or an unreactive gas such as nitrogen.
2. Although it can be hard to distinguish their seismic effects from those of very small nuclear blasts, nuclear blasts emit certain radioactive isotopes of xenon, a colorless, odorless, highly unreactive gas _ gas that invariably percolates up through the ground.
3. It's difficult to find unreactive gas in a sentence. 用unreactive gas造句挺難的