“Pohlé air lift pump”的概念、定义、翻译、参考文献-科学参考

单词	Pohlé air lift pump
释义	Pohlé air lift pump [pō`lā `er ´lift ´pǝmp] ^{MECHANICAL ENGINEERING} A pistonless pump in which compressed air fills the annular space surrounding the uptake pipe and is free to enter the rising column at all points of its periphery.
随便看	directional derivative directional drilling directional filter directional gain directional gyro directional homing directional hydrophone directional log directional microphone directional pattern directional phase shifter directional property directional relay directional response pattern directional separation filter directional solidification directional stability directional structure directional well direction angles direction cosine direction finder direction-finder-bearing indicator direction finder deviation direction-finding net

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