This is due to the chain transfer reaction between the active hydrogen and the active centers of the catalyst.

这是因为在活泼氢和催化剂活性中心之间有链转移反应发生。

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Dyeing assistant RG, a cationic compound, has at least two reactive groups which are sensitive to active hydrogen.

助染剂RG是一种阳荷性的化合物。它至少含有两个能与活泼氢发生作用的活性基因。

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They can also constitute two-component adhesives with aqueous polymers containing active hydrogen, and are dispersed in aqueous main agent before use.

或者与含活泼氢的水性聚合物组成双组分胶黏剂，使用前分散于水性主剂中。

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Most big oil companies have active hydrogen and carbon-sequestration efforts under way.

ECONOMIST: The environment

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