back wash造句

• Back wash filter for industry water
  工业用水自动反冲洗过滤器
• Back washing machines
  毛条复洗机
• Back wash line
  反洗管线
• But the back washing and regeneration of the fiber filter was imperfect , the application was not extensive
  为提高纤维的吸水性，以利于其再生，选取3种改性试剂进行纤维表面改性。
• To solve the problem of sand loss and harden , it is suggested that the diameter of media and the intension of back wash should be enlarged properly , and the time of back wash should be prolonged
  但为解决滤料黑化以后在反冲洗中出现跑砂及滤料结块的现象,建议水厂适当加大滤料粒径和反冲洗强度,延长反冲洗时间。
• In order to improve fiber ' s back washing ability , three reagents were chosen to modify the fiber and the results showed that one of them has outstanding modification effect
  分别比较了大分子结构亲水化、接枝共聚及亲水整理3种方法的不同改性效果，探讨了改性时间、改性温度及改性液浓度对纤维的亲水性及反小船坞再生能力的影响。