oil scavenger pump gear

例句：

1. 1. The oil recovery pump is essential forthe operation of the oil refinery.
   油回收泵对于石油炼油厂的运行至关重要。
2. 2. The design of this oil recovery pumpgear has been optimized to improve efficiency.
   这种油回收泵齿轮的设计已经优化，以提高效率。
3. 3. The oil recovery pump gear is usedin various industrial processes to recover and recycle oil.
   油回收泵齿轮被用于各种工业过程中，以回收和再循环油。