double discharge gear pump

例句：

1. 1. Thedouble discharge gear pump is used in theoil extraction process.
   双排阀泵在石油提取过程中使用。
2. 2. The double discharge gear pumpis a crucial component of the oilseparator.
   双排阀泵是油分离器的关键部件。
3. 3. The double discharge gear pump isdesigned to improve the efficiency of oil separation.
   双排阀泵设计用于提高油分离的效率。