文章针对M50SC型船用主机使用过程中活塞环磨损过大的问题,采用活塞环表面渗氮技术对实际使用的活塞环进行处理,力图通过改善活塞......

The microstructure of plasma nitrided layer catalyzed by rare-earth elements has beenstudied with TEM. The results show ......