... flame-proofness 耐焰性 flame-protected lamp 火焰安全灯 flame-quenching polymer 自熄性聚合物 ...
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The pulley over which this rope ran was fastened underneath the lantern in a little iron box, the key to which was kept by the lamp-lighter, and the rope itself was protected by a metal case.
绕绳子的转盘关在灯下面的一只小铁盒里，钥匙由点灯工人保管，绳子在一定的高度内有一根金属管子保护着。
With explosion-protected ballast box or explosion-protected ceiling lamp box;
可配防爆镇流器箱或防爆吊灯盒；
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