Avoid continued operation within the cavitationzone.
避免在空穴区域内持续运行。
2
Operation of valves continually in the cavitationzone should be avoided.
应该避免在空穴区域内持续运行阀门。
3
The larger tension stress in the hydraulic turbine blades, grain coarsening in the heat-affected zone and the causticity of fluid medium are the major causes of cavitation erosion.