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1·According to national statistics, coal mines with coal dust explosion risks account for 60% of all coal mines, among which coal mines with explosion index over 45% accounting for 16.3%.

据统计全国煤矿中，具有煤尘爆炸危险的矿井占煤矿总数的60%以上，煤尘爆炸指数在45%以上的煤矿占16.3%。

2·Only one explosion in recent history has made it to 7 on the Volcanic Explosivity Index – 10 times bigger than Krakatoa.

在近代历史上只有一次火山爆发达到了7级的火山爆发强度指数，它的爆炸力是喀拉喀托火山爆发的10倍。

3·If you wish to compose an E-mail, index a database of web pages, stream a kitten video in 720p or render an explosion at 60 frames per second, you must first build a computer.

如果你想写份邮件，检索一下网页的数据库，传输一段720p的小猫视频，或以60帧每秒的速度再现爆炸场面，首先必须得有台电脑。

4·The explosive limit is one of main index to judge explosion fatalness of fuel gases.

爆炸极限是评定可燃气体火灾爆炸危险的主要指标之一。

5·The fire and explosion hazard in liquefied petroleum gas storage tank zone were evaluated quantitatively by the fire and explosion hazard index method.

采用火灾爆炸危险指数评价法，对液化石油气储罐区火灾爆炸事故的危险性进行定量安全评价。

6·Analyzed the composition of circulating gas for CDQ, against the explosion limit value of combustible gas composition, the index of circulating gas composition is controlled and determined.

分析了干熄焦循环气体成分，针对可燃气体成分爆炸的极限值，控制及制定循环气体成分的指标。

7·According to hazard theory and principle of selecting assessment index, the paper constructs assessment index system of gas explosion in heading face.

根据危险源理论和评价指标选择原则，建立了掘进面瓦斯爆炸评价指标体系。