此外，还指出在设计流量下优化的叶轮不一定在非设计工况下也有良好的声学性能。

In addition, it is shown that impellers optimized at design point may not have good acoustic performances at off design point.

youdao

此外，还指出在设计流量下优化的叶轮不一定在非设计工况下也有良好的声学性能。

In addition, it is shown that impellers optimized at design point may not have good acoustic performances at off design point.

youdao