改进后的数字变量泵具有抗污染能力强，重复性好，与计算机接口方便，价格低廉的优点；
The improved digital variable displacement pump possesses such merits as strong antipollution ability, good repeatability, convenient interfacing with computer, and low cost.
目前，数字变量轴向柱塞泵还存在着很多问题。
At present, digital variable displacement axial piston pump has some problems.
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