Having a smoke-free environment often saves money for bars and restaurant owners, reducing their risks of fire and consequently their insurance costs.
无烟环境通常为酒吧和餐馆业主节约资金，减少火灾风险并因而降低他们的保险费用。
The evergreen forests of the Amazon and Congo basins, for example, are generally fire-free because the closed canopy maintains a level of humidity that inhibits burning.
例如，亚马逊和刚果盆地的乔木通常是防火的，因为它们遮天的树冠保持了一定的湿度，抑制了燃烧。
As one of effective fire extinguishing chemicals halogenated alkanes (ha) are effective, low-toxic, corrosion-free, stainless, with best chemical stability and safety for long-term storage.
卤代烷灭火剂具有高效、低毒、无腐烛、不污损保护对象、化学稳定性好、便于长期储存等优点。
As one of effective fire extinguishing chemicals halogenated alkanes (ha) are effective, low-toxic, corrosion-free, stainless, with best chemical stability and safety for long-term storage.
卤代烷灭火剂具有高效、低毒、无腐烛、不污损保护对象、化学稳定性好、便于长期储存等优点。
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