close impeller造句

• Pool dedicated copper pump , the shell is made of copper , highitensity and corrosive resistant ; closed impeller with bronze manufacture , strongly suction , durable ; and equipped with hair collector
  泳池专用铜泵泵壳材料采用铸铜，强度高、耐腐蚀；封闭式叶轮月青铜制造，自吸性好，坚固耐用；并配有毛发聚集器。