safety lamp
柯林斯词典
1. N an oil-burning miner's lamp in which the flame is surrounded by a metal gauze to prevent it from igniting combustible gas 安全燈 (Also called Davy lamp)
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1. N an oil-burning miner's lamp in which the flame is surrounded by a metal gauze to prevent it from igniting combustible gas 安全燈 (Also called Davy lamp)