plunger-type hydraulic oil pump
plunger-type hydraulic oil pump
柱塞式液压油泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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One new type of internal combustion oil hydraulic power system was put forward, which integrated the technologies of internal combustion engine and oil plunger pump.
提出了一种新型内燃式油压动力系统，该系统集成了内燃机与柱塞式液压泵技术。
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