In places such as India, ingenious, if slightly dangerous, devices exist whereby a fan is used to blow air through a mesh of straw which has water trickling through it powered by a small pump.
在印度之类的地方，那里有一种巧妙但或许稍有危险的设备，它利用风扇将空气吹过一个利用小型水泵而流淌着水的秸秆网来降温。
A small pump with an extended suction duct that is designed to pump fluid from barrels.
一种带延伸的吸入导管的小泵，用来从桶中泵出流体。
The design principle is to decrease the pump velocity, reduce stroke or to use a small pump to reduce the pump displacement and keep proper submersible depth.
设计原理是减慢泵速、缩短冲程或改用小泵来降低排量，保持适当的沉没深度。
This paper demonstrates that small pump technology will be one of the most important production technology in central Sichuan oil field, and contributes much to the stable production of the oil field.
认为小泵深抽技术将是川中未来最重要的采油工艺之一，在油田稳产中将起重要作用。
Industry Equipment: Electric Valve, Actuator, Small Pump.
工业设备：阀门，致动器，小型泵。
Industry Equipment: Electric Valve, Actuator, Small Pump.
工业设备：阀门，致动器，小型泵。
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