Any purge method should be repeated as often as required to be certain a flammable mixture cannot be formed upon introducing hydrogen or air to the system.

任何净化方法都应该尽量多重复几次，直到确定在把氢或空气引入系统时不会形成可燃混合物为止。

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They both involve heating, rather than burning, waste until it breaks down into a flammable mixture of carbon monoxide and hydrogen, called syngas, and residual char, ash or slag.

通过高温加热垃圾(不使其燃烧)，直到其分解生成可燃合成气(一氧化碳与氢的混合物)。残余物是些焦油和灰渣。

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If a flammable cryogenic liquid is involved, the flammable mixture zone, under unusual atmospheric conditions, may extend beyond the normal fog cloud produced by condensing water vapor in the air.

如果同易燃低温液体有关，在异常大气条件下，易燃混合物地带会延伸到空气中的水蒸汽的浓缩产生的正常雾云以外。

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