双活塞式液压自由活塞发动机是将内燃机与液压泵集成为一体的新型动力机械。
The objective of the study is to analyze one particular engine, the dual hydraulic free piston engine-DHFPE.
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。
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.
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