V2EX flashover

Flashover

释义 Definition

(火灾)轰燃/闪燃:在封闭或半封闭空间中,室内可燃物释放出的可燃气体与高温环境达到临界条件后,火势在极短时间内从局部燃烧突然转变为整体燃烧的现象。(该词在电气工程中也可指“电弧闪络/闪络放电”等含义,此处以火灾语境中最常见义项为主。)

发音 Pronunciation (IPA)

/flovr/

例句 Examples

The firefighters backed out because they feared a flashover.
消防员撤了出来,因为他们担心发生轰燃。

In the training video, the room’s heat and thick smoke signaled that a flashover was imminent.
在训练视频中,房间里的高温和浓烟表明轰燃即将发生。

词源 Etymology

flash(闪光、瞬间爆发)+ over(越过、覆盖)组合而成,字面有“瞬间席卷过去/覆盖全场”之意,用来形容火势在极短时间内从一点扩展到整个空间的突然“跳变”。

相关词 Related Words

文学作品 Literary Works

  • The Demon in the Freezer (Richard Preston)(非虚构作品中涉及危险情境与应急响应,常出现专业火灾术语,如 flashover)
  • Report from Engine Co. 82 (Dennis Smith)(消防题材纪实作品中常讨论火场行为与现象,包含 flashover 等术语)
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