The results, which obtained by using radial diffuser, show that due to the high loss through the diffuser, the efficiency of the liquid hydrogen pump 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。

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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.

本文介绍了L系列罗茨鼓风机在氢气输送过程中替代液环泵的优势与特点。

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