rotor hood door是什么意思

用法例句

This paper discussed the necessity of oil-repellent finishing of the filter with polypropylene meltblown nonwovens for protective face mask using in pesticide spraying and carried out the finishing.

讨论了农药喷施用防护口罩过滤材料熔喷聚丙烯非织造布拒油整理的必要性,进行了过滤材料的拒油整理。