而这两种贯流泵装置，又以齿轮箱传动方案的水力性能为优。

In the two kinds of the tubular pump sets, the gear box transmission scheme is much better in hydraulic performance.

youdao

而这两种贯流泵装置，又以齿轮箱传动方案的水力性能为优。

In the two kinds of the tubular pump sets, the gear box transmission scheme is much better in hydraulic performance.

youdao