Zirconium-aluminium getter pump is a new type of vacuum installation, in which the non-evaporable getter material is used to absorb the active gases.

锆铝吸气泵是利用非蒸散型吸气剂吸附活性气体的一种新型真空设备。

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These so-called active, or activated, charcoals are widely used to adsorb odorous or coloured substances from gases or liquids.

这些所谓的活性或活化炭广泛用于吸附气体或液体中的有味或有色物质。

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Some 174 active projects are expected to reduce emissions by an estimated 220 million metric tons of carbon dioxide or its equivalent in other greenhouse gases.

预计174个在建项目将减少2.2亿吨二氧化碳排放或其它温室气体排放。

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And it's believed that the high chemical reactivity of the surface is due to the deposition of chemically active gases from the atmosphere onto the surface, gases like hydrogen peroxide and ozone.

NPR: Revisiting the Viking Missions to Mars

It will study chemically active gases.

NPR: Revisiting the Viking Missions to Mars

Greenhouse gases are not the only climatically active ingredients that industry, farming and land clearance add to the atmosphere.

ECONOMIST: The science of climate change