您要查找的是不是：
- He came to look at the drainage. 他是来检查排水设备的。
- The drainage system has been aged. 排水系统已经老化了。
- drainage polyethylene 排水聚乙烯
- The drainage of the town is not good, some of the pipes are broken. 城里的排水系统不好,有些水管断裂了。
- The auxiliary fuel tank is made of polyethylene. 副燃油箱是用聚乙烯制造的。
- We must dig a drainage ditch to run off the water. 我们得挖一条排水渠把水排掉。
- High elasticity module polyethylene fi. 钢纤维和高强高模聚乙烯纤维。
- Fibre ropes for general service. Polyethylene. 通用纤维索。聚乙烯。
- Jacket: Black low mid or high density polyethylene. 护套:黑色低密度或中密度或高密度聚乙烯。
- The town's drainage is very efficient. 这城市的排水系统很好。
- Jacket:Black low mid or high density polyethylene. 护套:黑色低密度或中密度或高密度聚乙烯。
- A drainage passage, as to a culvert. 排水沟排水通道，如阴沟
- Is there adequate drainage where needed? 需要排水的地方其排能是否足够?
- Pancreatic abscess obviously requires drainage. 胰腺脓肿显然需要引流。
- The area has good natural drainage. 这个地区有良好的天然排水系统。
- The bricks were bedded in sand to improve drainage. 沙里埋入砖块，以改进排水系统。
- Acid Drainage Killing Some Fish in Ky. 河流遭酸性排放,鱼和昆虫死亡。
- This order shall be packed in cartons with polyethylene tops. 这批货的包装是用顶部带有聚乙烯的纸箱。
- Both uses tend to improve drainage. 两者对排水都有改进作用。
- The defect in the drainage must be remedied. 这排水系统的缺陷该设法补救。
