外啮合齿轮泵联轴器 external gear pump coupling ; gear-on-gearpump coupling

外啮合凸轮转子泵 abutment pump

外啮合齿轮沥青泵 outside gear asphalt pump

外啮合齿轮泵 gear-on-gear pump ; [车辆] external gear pump ; gear-on-gearpump

外啮合齿轮式油泵 external gear-type oil pump

磁力驱动外啮合齿轮泵 Magnetically coupled external gear pump

外啮合齿轮油泵 external gear type oil pump

力士乐外啮合齿轮泵 REXROTH