在每个伺服控制器活塞杆上安装扰流板保险卡箍。
SPOILER is installed on the piston rod of each servo-control.
测试仪器安装在水力活塞泵泵芯尾部取样器内，随泵芯投入井下进行测试，可实时检测地层液的含水率情况，利用数据存储器实时保存历史曲线，提供了全天候观测生产过程的手段。
Testing instrument was installed in sampler at heel of hydraulic pump, put into down-hole with pump, and it can examine water cut of formation fluid, save history curves in real time by data memory.
这些磁性传感器提供可靠的活塞式磁检测，并方便地安装汽缸，而不需要或孔用于安装槽。
These magnetic sensors offer reliable piston magnet detection and are easily mounted, without the need for mounting slots or holes in the cylinder.
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