除毒气 meaning in English
degassing
Examples
- Two key parameters are the size of the smallest particle the filter traps ( the best are 0 . 3 micron ) and the efficiency of gases the filter removes , rated at 95 , 99 or 99 . 97 percent
主要的评定标准有两个:过滤器能阻挡的微粒大小(最好的是0 . 3微米) ,以及过滤器移除毒气的效率(有95 % 、 99 %或99 . 97 %三种等级) 。