speed variable pump 变速泵

variable speed pump 可变速泵 ; 变速泵 ; 调速水泵

variable-speed pump 变速泵 ; 调速水泵

variable-speed metering pump 变速计量泵

variable speed pump coupling 变速泵联轴器

variable-speed single-stage centrifugal pump 单级变速离心泵

variable-speed electric submersible pump 变速电潜泵

motor-driven variable speed feedwater pump 电动调速给水泵