短語詞組短語bucket -wheel excavator arm support 斗輪挖掘機(jī)臂架the bucket wheel excavator 斗輪挖掘機(jī)boom of bucket wheel excavator 斗輪挖掘機(jī)臂架bucket wheel excavator lood -ing 輪斗挖掘機(jī)采裝 返回 bucket wheel excavator