Propylene and butylene yields increase with low hydrogen transfer reaction.

氢转移反应越低，丙烯及丁烯等烯烃选择性越高。

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Low hydrogen electrode to be used for welding thick steel plate to casting and high tensile plates.

应采用低氢焊条焊接厚钢板与铸钢件和高强度板间的连接。

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In the past, the process, which is known as electrohydrogenesis, has had poor efficiency rates and low hydrogen yields.

过去，这种被称之为“电-氢”的过程效率低，产氢气量少。

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Low doses of hydrogen sulphide, a gas which smells like rotten egg, can safely reduce the metabolism of mice, putting them into a state of suspended animation.

ECONOMIST: Researchers find hydrogen sulphide can lower metabolism

Sunday flight east, he called his girlfriend, who recommended he give Sierra some low-concentration hydrogen peroxide solution, which many recognize as a safe way to get a dog to vomit.

CNN: 'Hungry dog' eats, vomits up treasured Masters tickets

In one Ikaria-funded study published in the Proceedings of the National Academy of Sciences, Albert Einstein College of Medicine's David Lefer found that low doses of hydrogen sulfide slashed heart damage by 72% in mice after heart attacks, even without inducing hibernation.

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