1) bucket rod end relief valve
铲斗杆端安全阀
2) stick rod end relief valve
斗杆缸杆端安全阀
3) bucket cylinder relief valve
铲斗缸安全阀
4) bucket line relief valve
铲斗管路安全阀
5) bucket load relief valve
铲斗负载安全阀
6) stick line relief valve
斗杆管路安全阀
参考词条