最后以恒压泵变量机构为实例，对YB - 20ah型柱塞式恒压主量泵变量机构进行了寻优设计，并取得了良好的效果。
Finally, taking the constant pressure pump as example, we make YB-20AH axial piston pump with constant pressure optimized by this method.
导向液压缸与主液压缸之间由连通管连通，导向柱塞的一端套装在导向液压缸内。
The guiding hydraulic cylinder is connected with the main hydraulic cylinder by the communicating pipe. One end of the guide plunger is sheathed in the guide hydraulic cylinder.
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