发动机泵机组
engine pump machine
Deliver motive pump machine
混凝土泵送机械
Concrete pumping machinery
上游泵送机械密封
upstream pumping mechanical face seal
Upstream pumping mechanical seal
输送机泵壳排油回路
conveyor pump case drain circuit
输送机泵壳区
conveyor pump housing area
远距离泵送机制砂混凝土
Long distance pump-delivering concrete mixed with machine- processed sand