protective breathing equipment

基本解释

Fire fighting personnel should wear full protective equipment, including self-contained breathing apparatus (SCBA) for all inside fires and large outdoor fires.
灭火人员应佩戴完全防护设备，包括自给式呼吸器内的所有大型户外火灾和火灾器具（呼吸器）。
actview.spaces.live.com
Though they wear breathing apparatus and other protective equipment while fighting fires, researchers point out, they typically remove the gear when they're merely in the vicinity of the fire.
研究人员指出，虽然他们带有呼吸面具和其他保护设备，但是通常会在离火事不远处将设备摘除。
Firemen should wear proper protective equipment and positive pressure self-contained breathing apparatus.
消防员须身穿保护装置及正压呼吸设施。