本发明不仅可以防止泄漏，而且可以减少齿轮对机油泵局部壳体的磨损，延长壳体的使用寿命。

The engine oil pump not only can prevent leaking, but also can reduce wear of the gear to parts of the casing of the engine oil pump, and prolonging the service life of the casing.

youdao

本发明不仅可以防止泄漏，而且可以减少齿轮对机油泵局部壳体的磨损，延长壳体的使用寿命。

The engine oil pump not only can prevent leaking, but also can reduce wear of the gear to parts of the casing of the engine oil pump, and prolonging the service life of the casing.

youdao