通过在泵开和关时电磁阀所进行的开启和关闭来操作泵控制阀。
Solenoid operated pump control for controlled opening and closing on pump start-up and shut-down.
司钻通过司钻控制盘(一个由仪表、控制杆、电阻箱和其它气动、液动及电子仪器组成的控制室)操作泵、绞车、转盘等。
The driller operates the pumps, drawworks, and rotary table via the drillers console-a control room of gauges, control levers, rheostats, and other pneumatic, hydraulic and electronic instrumentation.
按照FDA的要求，安全使用奶泵的第一步是通篇阅读使用说明书，因为不同品牌的操作方式不同。
According to the FDA, the first step for using a breast pump successfully is to read the instruction booklet thoroughly, because various brands operate differently.
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