1) stick/swing check valve group
斗杆/转盘单向阀组件
2) swing/stick check valve
转盘/斗杆单向阀
3) boom/bucket check valve group
动臂/铲斗单向阀组件
4) stick load check valve
斗杆进油单向阀
5) swing check valve
转盘单向阀
6) swing valve group
转盘阀组件
参考词条