Terms containing convex head

Subject	English	Chinese
tech.	convex head	凸形封头
auto.	convex head piston	凸顶活塞
auto.	convex head valve	凸顶气门
tech.	convex head valve	凸形气门头
auto.	convex piston head	活塞凸顶
auto.	convex piston head	凸形活塞顶