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1·The shortcoming of top valve housing for standard type oil well pump plunger is wear and rupture of oil flow pore wall.

标准型抽油泵柱塞上阀罩的工作缺陷是出油孔壁磨损断裂。

2·The travelling valve of the pump is designed to be closed and opened forcibly, and the pump plunger adopts equal-diameter bare pipe with a floating structure to prevent gas lock and sand sticking.

这种抽油泵柱塞游动阀采用机械强制开启和关闭的结构，柱塞为等径光管、浮动结构，可防止发生气锁游动阀、阀球关闭滞后、砂卡柱塞现象。

3·Using constant pressure variables plunger pump, output pressure can keep constant and flow varies as per system's demand.

采用恒压变量柱塞泵，输出压力保持恒定，输出流量根据系统需要而变化。

4·Warning: entire pump must be shut off before adjusting the packed plunger side or bodily injury could result.

警告：调整密封活塞时泵必须关闭，否则容易受伤。

5·This article introduces the technological improvement of deburring the plunger couples of P7 pump in order to ensure Dlunser couples cleanness to the standard.

通过对P 7泵柱塞偶件去毛刺工艺的改进，确保P 7泵柱塞偶件清洁度达到规定的要求。

6·In this paper, the failure mechanism of plunger seals for injection pump used in oil field is investigated and the features of existing reciprocating seal structures are evaluated.

对大功率油田注水柱塞泵柱塞密封的失效机理进行了论述，分析了现有几种典型的密封结构。

7·One effective way is preferred pump barrel and plunger of materials and surface treatment processes.

其中一个有效的方法就是优选泵筒和柱塞的材料和表面处理工艺。

8·Internal combustion water power system integrated traditional internal combustion engine and plunger pump technique, made directly use of the rectilinear motion of plunger for output water power.

内燃式水动力系统将传统内燃机与柱塞式水泵技术集成为一体，直接利用活塞往复直线运动输出水动力。

9·This article discusses the cause and damage of shock during distributing oil in axial plunger pump, introduces and analyzes some methods of controlling shock during distributing oil.

本文讨论了轴向柱塞泵配油冲击的原因和危害，并介绍和分析了几种控制配油冲击的方法。

10·The device integrated traditional combustion engine and plunger pump technique, made directly use of the rectilinear motion of plunger for outputting water power.

内燃式水动力装置将传统内燃机与柱塞式水泵技术集成为一体，直接利用活塞往复直线运动输出水压能。