Respiratory protective devices - Self-contained closed-circuit breathing apparatus - Part 4: Chemical oxygen (NaClO<(Index)3>) generating type for work and rescue; requirements, testing, marking
呼吸防护装置.自给式闭路呼吸器.第4部分:工作和救援用化学氧(NaClO<(索引)3>)产生型;要求、测试、标记