内封闭式活塞泵 inside-packed type piston pump

封闭式活塞式压缩机 HERMETIC COMPRESSOR

内关闭式活塞泵 inside-packed type piston pump

内封闭式活塞泵联轴器 inside-packed type piston pump coupling

全封闭涡旋式或活塞式 Hermetic gyral or piston ; With hermetic gyral or piston ; Hermetic Scroll or piston

闭式循环水力活塞泵 closed cycle hydraulic piston pump ; cycle hydraulic piston pump

全封闭涡旋式活塞式 Hermetic Scroll or Piston