plunger return spring是什么意思

用法例句

Establishment of dynamic model for plunger gas lift;

柱塞气举动态模型的建立

Development and application of auto - compensation soft plunger pump;

自补偿式软柱塞泵的研制与应用

Analyses on motion law of piston of constant flow pump for polymer injection;

注聚合物用恒流量往复泵柱塞运动规律分析

Application of ceramic coating on the surface of the piston;

陶瓷涂层在柱塞上的应用

Improving the plunger room sealing system of piston pump of ACF-70B fracturing car;

ACF-70B型压裂车柱塞泵柱塞室密封系统的改进

Design and dimensional calculation of mounting holes of slipping shoe in piston pump;

柱塞泵保持架滑靴安装孔的设计及尺寸计算

The analysis of stator harmonic current when piston pump is driven by asynchronous motor;

柱塞泵对异步电动机定子电流的谐波分析

Considering the problem that different diameter combined tubing are adopted and conventional plunger lifting no longer applies in deep well,this paper presents a kind of new relaying type plunger gas-lift equipment applied to upper large down junior combined tubing.

提出了一种应用于上大下小组合油管柱的新型接力式柱塞气举装置。