... 低压配电装置 low voltage electric installation 爆炸下限 lower explosive limits 低压断路器箱 low-voltage circuit breaker box ...
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The result shows that the content of combustible gas is far lower than the lower explosive limits and there is no the explosion danger in heating furnace.
研究结果表明，加热炉运行全过程中可燃气体含量较少且远低于烟气混合物爆炸极限，不存在爆炸危险；
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