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.
基础配件绅士服务奖章蓄胡绅士超危险侦探的太阳眼镜…吗?罗斯福熊熊外科手术口罩盗贼面罩相机大胡子。
Essential Accessories Gentle Manne's Service Medal Whiskered Gentleman Dangeresque, Too? Teddy Roosebelt Physician's Procedure Mask Villain's Veil Camera Beard.
随弃式呼吸防护口罩是呼吸器的一种，呼吸防护口罩的面罩整体都是由过滤材料构成的。
Disposable or filtering facepiece respirators are a type of respiratory protection in which the entire respirator facepiece is comprised of filter material.
随弃式呼吸防护口罩是呼吸器的一种，呼吸防护口罩的面罩整体都是由过滤材料构成的。
Disposable or filtering facepiece respirators are a type of respiratory protection in which the entire respirator facepiece is comprised of filter material.
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