This paper introduces the cause of the seepage in valve box of oil isolation pump, and solves the problem of the valve box seepage by way of the improvement of die slot in O - ring and seal material.

本文介绍油隔离泵阀箱渗漏的原因，能过对阀盖O型圈沟槽的改进及采取乐泰密封胶替代牛油盘根进行密封，解决了阀箱渗漏的问题。

youdao

The dimension accuracy of the sealing slot is closely related to the life time, reset accuracy of the oil cylinder piston and braking sensitivity.

制动钳体锥体密封沟槽的尺寸精度影响着油缸密封圈的使用寿命，油缸活塞的复位精度及整个制动器的制动灵敏程度等；

youdao

Oil company Exxon Mobil has regained the top slot after Apple shares fell 2.4%, following a 12% drop on Thursday.

BBC: Apple eclipsed by Exxon Mobil as most valuable company