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				           		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.
								    										 
								    				            	 youdao 
- 
				           		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.
								    										 
								    				            	 youdao