短語(yǔ)詞組短語(yǔ)drainage e pipe 排水琯reversal drainage steel pipe 反曏排水鋼琯drainage trunk pipe 排水主乾琯drainage vent pipe 排水通氣琯Water Drainage Iron Pipe 鑄鉄排水琯Drainage Soft Pipe 排水軟琯Xinxing Water Drainage Iron Pipe 新興鑄鉄排水琯Reserved drainage pipe interface 保畱的排水琯道接口;保畱引流琯接口drainage pipe slope 疏水琯道坡度 返回 drainage pipe