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1·A hydraulic piston applies the SOWC and a return spring releases it.

液压活塞使SOWC产生作用而返回弹簧使它释放。

2·Hydraulic piston pump supplies energy for the lift of downhole liquid by the hydraulic pressure.

泵是一种依靠液体压力传递能量的抽油系统。

3·The factory is Tappet car engine and hydraulic piston pin the specialized production enterprises.

本厂是汽车发动机液压挺杆和活塞销的专业化生产企业。

4·The results of analysis are useful to the design and manufacture of hydraulic piston pumps with low noise.

理论分析的结果对于设计和制造低噪声的柱塞式液压泵有一定的指导意义。

5·XIA Guibing. The Research of Seawater Hydraulic Piston Motor [d]. Qingdao: Ocean University of China, 2013.

夏贵兵。海水柱塞马达的研究[D]。青岛：中国海洋大学，2013。

6·However, someone thinks that the optimum oil recovery mode of Lunnan oilfield should be hydraulic piston pump.

但有人对此提出了不同意见，认为该地区的机械采油应首选水力活塞泵。

7·Capacity 15 ~ 100% stepless adjustment or two, three-regulation, set to take changes in the way a hydraulic piston.

容量15 ~ 100%无级调节或二、三段式调节，采取油压活塞增减载方式。

8·In chapter 2, a fixed high pressure single-phase water mist fire suppression system driven by water hydraulic piston pump is developed.

第二章，研制了由纯水液压柱塞泵驱动的固定式高压单相流细水雾灭火系统。

9·At the initial stage of development, the main oil production methods give priority to hydraulic piston pump and closed hot water circulation.

开发初期，主导开采方式主要以“水力活塞泵、闭式热水循环”等采油工艺为主。

10·This paper analyzed the structural theory and the mechanical model of hydraulic piston engine, and briefly introduced the optimization theory of ANSYS.

本文分析了液压约束活塞发动机的结构原理和力学模型，简要介绍了ANSYS的尺寸优化理论。