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- Respiratory protective devices - self - contained closed - circuit breathing apparatus , compressed oxygen type - part 2 : short duration - compressed oxygen type for moderate work rates ; requirements , testing , marking
呼吸保护器.自闭路呼吸装置.第2部分:适度工作用短时 - Respiratory protective devices - self - contained closed - circuit breathing apparatus compressed oxygen or compressed oxygen - nitrogen type - requirements , testing , marking includes amendment a1 : 2000 ; german version en 145 : 1997 a1 : 2000
呼吸防护装置.带压缩氧气或压缩氧气-氮气的自持式闭
Last modified time:Wed, 13 Aug 2025 00:29:56 GMT