Have no corrosion gas, flammable gas, oil mist, dust etc.

无腐蚀气体，易燃气体，油雾，灰尘等。

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A place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is present continuously or for long periods.

爆炸性环境中的爆炸混合物以气体、蒸气或薄雾形式连续出现或长时间存在的场所。

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