Because of the problems with SCBA systems, any respirator that you are likely to use will have a filter that purifies the air you breathe.
由于SCBA系统存在的不足，任何您可能用到的呼吸器都会有一个过滤器来净化呼吸所需空气。
2
The supplied-air respirator uses the same sort of filter cartridge found in an air-purifying respirator .
供气式呼吸器使用同样与过滤式呼吸器一样的过滤罐。
3
Disposable or filtering facepiece respirators are a type of respiratory protection in which the entire respirator facepiece is comprised of filter material.