短語詞組短語bucket t trench digger 斗式挖溝機(jī)multi bucket trench digger 多斗挖溝機(jī)multi -bucket trench digger 多斗式挖溝機(jī)inclined chain -and-bucket trench digger 傾斜式鏈斗挖溝機(jī) 返回 bucket trench digger