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canary-金丝雀

时间:2018-09-18 00:23:19      阅读:31      评论:0      收藏:0      [点我收藏+]

标签:RKE   exce   enter   situation   discover   red   text   condition   air   

  17世纪,英国矿井工人发现,金丝雀对瓦斯这种气体十分敏感。空气中哪怕有极其微量的瓦斯,金丝雀也会停止歌唱;

而当瓦斯含量超过一定限度时,虽然鲁钝的人类毫无察觉,金丝雀却早已毒发身亡。

当时在采矿设备相对简陋的条件下,

工人们每次下井都会带上一只金丝雀作为“瓦斯检测指标”,以便在危险状况下紧急撤离。

  In the 17th century, British mine workers discovered that canaries are very sensitive to gas .Even if there is a very small amount of gas in the air, canaries will stop singing.

When the gas content exceeds a certain limit, eventhough the blunt human beings are unaware, the canary has already  poisoned and died.

At that time,under the relatively simple conditions of mining equipment,

workers would bring a canary as a “gas detection indicator” every time they went down, in order to evacuate in a dangerous situation.

canary-金丝雀

标签:RKE   exce   enter   situation   discover   red   text   condition   air   

原文地址:https://www.cnblogs.com/imimjx/p/9665415.html

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