1) head end check valve
油缸头部单向阀
2) cylinder check valve
油缸单向阀
3) head end counterbalance valve
油缸头部补偿阀
4) head end line relief valve
油缸头部油管安全阀
5) head end control valve port
油缸头部控制阀口
6) head end lift relief valve
油缸头部提升安全阀
参考词条