Low hydrogen type electrode is baked out before welding, the baking temperature and duration as specified by the manufacturer.

低氢焊条在焊前应烘干，烘干温度和时间遵照厂家说明。

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The effect of Harc and liquid bridge coexist"of low hydrogen type covered electrode onthe arc stability and spatter is pointed out."

指出低氢型焊条的“弧桥并存”现象对电弧稳定性和飞溅的影响。

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This paper describes the prescription design of the low hydrogen type basic electrode which is manufactured with screw type extrusion coater.

本文着重论述了以螺旋机为生产手段的碱性低氢焊条的配方设计。

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So, for example, if we look at the 2 s orbital of argon, it's going to have the same amount of nodes and the same type of nodes that the 2 s orbital for hydrogen has.

所以举例来说，如果我们看氩的2s轨道，它有相同数量的节数,和相同类型的节点,对于氢的2s轨道。

麻省理工公开课 - 化学原理课程节选

They compress a pellet of a type of hydrogen found in seawater by a factor of about 40, 000, like squashing a basketball to the size of a pea.

FORBES: A Nuclear Hybrid

Also a type of electric vehicle, a fuel-cell car takes hydrogen gas and converts it into electricity, while emitting only water vapor.

CNN: Hydrogen fuel-cell cars look to overtake electric autos

Finally, Declan looked at the BMW Hydrogen 7 - its only emission is water vapour but the technology for this type of green car is still being developed and currently, there are no models on sale.

BBC: NEWS | Programmes | Breakfast | Low carbon family: "Green" cars