Because of the high water head and high flow speed, the aeration for preventingcavitation erosion becomes more and more important.
由于水头高，流速大，明流泄洪洞的掺气减蚀越来越受到重视。
2
In order to get a good performance on preventingcavitation, the impeller of magnetic driving pump is designed in low-NPSHR method and variable-pitch inducer is installed.
为了获得良好的抗汽蚀性能，对磁力泵叶轮采取低汽蚀余量设计措施，同时配置变螺距诱导轮。
3
So preventing cold cyclinder from piercement should start from preventing cold cyclinder from cavitation erosion.