短語詞組短語bucket t trencher 斗式挖溝機bucket wheel trencher [機]斗輪式挖溝機chain bucket trencher [機]鏈斗式挖溝機;鏈斗式挖溝機multi -bucket trencher 多斗式挖溝機endless -bucket trencher 輪式挖溝機disk and bucket trencher 輪斗式開溝機 返回 bucket trencher