loader boom meaning in Chinese

横梁式装料机
起重转臂
装载机转臂

Hydraulic excavator and backhoe loader boom lowering control device . requirements and tests
液压挖掘机和挖掘装载机动臂下降控制装置.性能要求和试验方法
Earth - moving machinery . hydraulic excavator and backhoe loader boom lowering control device . requirements and tests
土方机械.液压挖掘机和反向铲装载机悬臂降低控制装置.要求和试验
Earth - moving machinery - hydraulic excavator and backhoe loader boom - lowering control device - requirements and tests
土方机械.降低液压挖土机和反铲装载机声震的控制装置.要求和试验
Safety of earth - moving machinery - specification for hydraulic excavator and backhoe loader boom lowering control device
运土机械的安全性.液压挖掘机和反铲装载机起重吊杆放下控制装置