For the dangerous sites with explosive air mixture: 2 division.
爆炸性气体混合物危险场所：2区。
The explosive mixture of firedamp and air.
'甲烷'。''和空气的爆炸混合物。
Can burn, vapor and air to form an explosive mixture, the explosion limit of 7%-73% (volume).
能燃烧，蒸气与空气形成爆炸性混合物，爆炸极限7% - 73%(体积)。
Dust explosive electric equipment and air explosive electric equipment temperature classes is the same.
粉尘防爆电气设备的温度组别与气体防爆电气设备的组别划分相同。
Explosive with or without contact with air.
R6与空气或未与空气接触发生爆炸。
Explosive with or without contact with air.
R6与空气或未与空气接触发生爆炸。
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