Galvanic cell type hydrogen sensors and fuel cells belong to the former, and hydrogenpump, steam electrolyzer and membrane reactors to the latter.
原电池型的氢传感器和燃料电池属于前者，氢泵、蒸汽电解器和膜反应器属于后者。
2
The results, which obtained by using radial diffuser, show that due to the high loss through the diffuser, the efficiency of the liquid hydrogenpump is lower.
采用径向导叶的液氢泵的试验结果表明，导叶损失大，导致液氢泵效率低。
3
This paper introduced the advantage and characteristic of L-series roots blower, which could substitute the liquid ring pump in the process of hydrogen transportation.