基本解释反向铲铲土机；反铲挖掘机词组短语短语backhoe on shovel 反铲单斗挖土机backhoe e shovel 反向铲铲土机mining with backhoe shovel 反铲开采工艺backhoe shovel更多词组专业释义土木建筑工程反向铲铲土机