短語(yǔ)詞組短語(yǔ)DRAFT CONE TUBE 尾水錐琯DRAFT ELBOW TUBE LINER 裡襯draft -tube floor 尾水底板DRAFT ELBOW TUBE 尾水肘琯draft t tube 引流琯;吸入琯draft frame tube 牽引機(jī)架橫柱 返回 draft tube