针对发动机装配现场装配气门油封存在的问题，设计了专用的气门油封装配机，提高装配质量和生产效率。
Aiming at the problem in assembling oil seal for air valve of engines, it is designed a special assembler for the work. Thus, assembling quality and production efficiency is improved.
对氨压缩机密封存在的问题进行了分析，提出了改进意见，并对现场实施改造的可行性、经济性进行了探讨。
The deficiency of the mechanical seal of ammonia compressor was presented, and the way, the feasibility and the economical efficiency of the gas seal reform were discussed.
应用推荐