bore hole pump 钻孔泵
bottom hole pump 井底深井泵 ; 井底沉没式泵
down-hole pump 有深井泵 ; 井下泵
bore-hole pump 钻孔泵
hydraulic bottom-hole pump [油气] 水力井下泵
bottom m hole pump 井底深井泵
Petroleum down-hole pump 石油潜孔泵
Through the experiments, we have studied the working characteristics of the down-hole pump at different inclined angles and studied the moving pattern of ball valves.
以试验为手段，研究了深井泵在一定倾斜角度下的工作特性及球阀的运动规律。
Long spiral hole pump pressure CFG (Cement Flyash Gravel) pile construction technology has such advantages as small noise, quick construction rate and low construction price.
长螺旋钻孔管内泵压CFG桩成桩混合材料施工方法，具有施工噪音低，成桩速度快，工程造价较低等特点。
Pump wear parts are mainly drive shaft and bushing, passive gear center hole and shaft pin, pump shell lumen and gear, gear face and pump cover, etc.
齿轮泵的磨损部位主要有主动轴与衬套、被动齿轮中心孔与轴销、泵壳内腔与齿轮、齿轮端面与泵盖等。
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