...acement axial piston design；可变排量的轴向柱塞设计[结构] variable displacement axial piston pump；可变排量的轴向柱塞泵 variable displacement axial piston type；可变排量的轴向柱塞式 ..
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At present, digital variable displacement axial piston pump has some problems.
目前，数字变量轴向柱塞泵还存在着很多问题。
The main content is as follows: 1. The supporting way of the axial variable displacement piston pump is researched.
论文主要完成以下研究内容：1。对轴向变量柱塞泵的支撑方式进行了研究。
At the present, the key technology of the axial variable displacement piston pump is grasped by the foreign companies, the research and manufacture level in our country are on the elementary stage.
目前，轴向变量柱塞泵的关键技术掌握在国外公司手中，国内的研究、生产、制造均还处于初级阶段。
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