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。
A water mist fire suppression system driven by water hydraulic piston pump is developed and the water hydraulic parts are successfully applied in fire-fighting field.
设计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样机，将纯水液压元件成功应用到消防领域。
On research of water hydraulics, the development of water hydraulic axial piston pump is extremely vital and is much difficult.
在水压技术的研究中，以轴向柱塞泵为代表的水压泵的开发是极其关键的，也具有较大难度。
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。
However, in research of water hydraulic axial piston pump, inertia items should play an important role because the viscosity of water is much less than that of oil.
然而，在水压轴向柱塞泵的研究中，由于水的粘度比油的粘度小得多，因此，惯性项就起着较大的作用。
However, in research of water hydraulic axial piston pump, inertia items should play an important role because the viscosity of water is much less than that of oil.
然而，在水压轴向柱塞泵的研究中，由于水的粘度比油的粘度小得多，因此，惯性项就起着较大的作用。
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