还有一个小组在加纳开发了一种移动脚踏泵，农民可以此获得用于灌溉的水。
Another team developed a mobile bicycle pump in Ghana to help farmers get water for irrigation.
在使用连续管柱的情况下，在含气油井条件下的安全工作能力使得流体在任何时刻都能被泵送而与位置和移动方向无关。
The ability to work safely under live well conditions, with a continuous string, enables fluids to be pumped at any time regardless of the position or direction of travel.
工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。
Working principle: piston moves from left to right, form a negative pressure pump cylinder, the liquid tank into the pump by the inhalation valve cylinder.
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