He had helped to design the petrol engine, and plastics, and the ring pull can.
他曾经协助过设计汽油发动机，塑料和易拉罐。
The twist angle of L shape piston ring directly influences the performance of diesel engine.
形活塞环的扭角对柴油机的性能有着显著的影响。
First stage product quality planning of diesel engine piston ring.
负责柴油机新产品质量先期策划。
The piston ring is a key part of automobile engine.
活塞环是汽车发动机的关键零件。
A test platform is built and piston ring wear is simulated in YC4108D diesel engine.
以YC 4108d柴油机为研究对象，构建试验平台，模拟活塞环磨损。
A test platform is built and piston ring wear is simulated in YC4108D diesel engine.
以YC 4108d柴油机为研究对象，构建试验平台，模拟活塞环磨损。
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