The women get up in the middle of the night to walk 2km to the nearest pumping station, where someone has removed a couple of brick from the base to allow a steady flow of water to pour out.
妇女们半夜起床，走2公里的路到最近的抽水站取水，在水井底部两块砖头被拿走了，因此有源源不断的水流冒出来。
The rod pumping is the predominance mechanical recovery mode in world petroleum production, the system dynamical simulation is the base of system efficiency analysis and optimum design.
有杆泵抽油是世界采油工程中一直占主导地位的机械采油方式，系统动态模拟是系统效率分析和优化设计的基础。
Through the analysis of the response of resonator base on different pumping signals, sine burst is used for pumping signal of the system to improve the efficiency and detecting-distance.
通过分析声表面波谐振器对不同激励信号的响应，本文选用正弦脉冲串作为激励信号，来提高系统工作效率和传感距离。
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