trace gas

常见例句

Carbon dioxide is inexplicably a mere trace gas when it should be the bulk of the air, as it is on other planets.
令人费解的是，二氧化碳理应像在其他行星那样成为大气的主要成分，却仅仅是一种示踪气体。
The new method overcomes the limitations of established methods of IDMS in the quantitative analysis of trace gas.
该方法解决了已有同位素稀释质谱法在微量气体定量分析中的难题。
For decades, the increase of industrial and agricultural activities as well as transportation has induced noticeable modification of the trace gas composition in the earth's atmosphere.
近百年来，人类工业和农业活动以及交通运输的发展已经引起了地球大气中微量气体组成的明显变化。

But with emerging technologies, raw biogas can be stripped of carbon dioxide and other trace gases, bringing it up to the quality level of natural gas.
FORBES: Biogas and the Shale Gas Bonanza