呼吸保护装置。与全罩式面罩、半罩式面罩或口罩一起使用的压缩空气导管呼吸装置。要求、试验和标志。
Respiratory protective devices - Compressed air line breathing apparatus for use with a full face mask, half mask or a mouthpiece assembly - Requirements, testing, marking.
上层建筑压缩空气管系(供水管、消防管、烟雾探测管)密性试验。
Superstructure compressed air (water supply, fire fighting, smoke detection) piping to be done air-tightness test.
本文介绍了压缩空气A类泡沫灭火系统的组成和工作原理，并通过试验得到了此系统的一些应用结论并提出了今后的研究方向。
The paper introduces the parts and operating principle of the compressed air class A foam system and gets some conclusions about the application theory of the system through test.
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