Chemical detector, NBC suits, population protection hoods, gas mask, biological filter.

化学药品检测器, 三防(NBC)套装, 集体防护罩, 防毒面具, 生物过滤设备.

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Third, the anti - down unreliable process.

第三, 防 倒工艺不可靠.

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Stopping ventilation without planning , gas explosioncoal dust explosion and fire accidents are very common in coalmines.

“一通三防”通常指通风 、 防止瓦斯、煤尘和火灾事故.

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Labor Insurance boots developed with the domestic advanced level of oil, acid and - resistant of the three - boots.

劳保靴开发出具有国内先进水平的耐油 、 耐酸、耐碱的三 防 靴.

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