The influence of hydrogen pressure on liquefaction is more significant in the presence of catalyst.

当有催化剂存在时氢压对转化率的影响比无催化剂时显著。

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The influence of temperature, hydrogen pressure and contents of active component in catalysts are discussed.

讨论了温度、氢气压力、催化剂活性组分含量对苯部分加氢制备环己烯反应的影响。

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The hydrogen embrittlement factor has the same dependence on the hydrogen pressure and charging current density.

合金的氢脆因子与氢气压力或电流密度之间呈相同的依赖关系。

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Hydrogen gas it's in its most stable state, right at room temperature and pressure.

和常压下氢气是氢元素，最稳定的状态，这个小“0“

麻省理工公开课 - 热力学与动力学课程节选

Now in this particular reaction, I've got hydrogen gas, iron solid. Those already are elements in their most stable forms at room temperature and pressure.

特定的反应中，我有氢气,固态铁，这些都已经是,处于室温和常压下,最稳定的元素单质。

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If autos are someday powered by hydrogen, Ovshinsky thinks the hydrogen should be stored not as a gas under high pressure, but as a solid hydride.

FORBES: Magazine Article

The new approach described by Matthias Beller, from the University of Rostock, and colleagues uses a ruthenium-based catalyst, which can efficiently generate hydrogen from methanol at 65-95C and at ambient pressure.

BBC: Hydrogen's energy promise improves

The hope is eventually to have higher-pressure refuelling units in public places which would be capable of offering enough hydrogen for cars to travel 100 miles.

BBC: Hydrogen refuel station unveiled