pumping back 反馈
back-crank pumping unit [油气] 前置式游梁抽油机
back-side-crank pumping unit 单拐多连杆抽油设备 ; 单拐多连杆抽油装备
back-pumping equipment 逆向抽水设备
back-crank pumping units 双井联动抽油设备
back-crank k pumping unit 前置式游梁抽油机
Already by the 1960s, people were pumping groundwater faster than it could be replenished by water soaking back into the ground.
况且在20世纪60年代,人们抽水速度就已经超过地下蓄水层可吸纳地面水自行补充的速度。
The way it runs – pumping its back legs akimbo, has earned it the name "bicycle lizard."
它逃跑的方式 – 把后腿向后弯曲,所以被人称为“自行车蜥蜴”。
Check back for full details on this exciting approach to pumping up framework performance!
请回来查看有关这个令人振奋的方法的完整信息,以提升框架性能!
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