vei

Vei

1
指数
喷发强度指数(VEI)是用喷发物质总品质与喷发柱高度来衡量火山喷发强度的指数。尽管如此，人们仍十分惊讶。
2
全俄电工研究院
在中俄两国确立战略协作伙伴关系的经济基础下，由中电联龙源电气联合体（LYEC）与全俄电工研究院（VEI）全面合作成立维依埃龙源电工研究院（VLI），实现两者之间科技和产业互补性以及共生性合作。
3
火山迸发指数
列入关心的来由：20世纪四次最大规模的火山迸发，圣塔玛里亚就占了一次，记实的火山迸发指数(VEI)为6级，留下了一个曲径为700-1000米的火山口。附近的Quetzaltenango镇大约无5000人丧生，而之后那里很多人都传染了疟疾。

短语

1
VEI have begun to research on the discharge mechanism and insulation characteristic of pressure air.
VEI从上个世纪中期开始便对压缩空气的放电机理及其电气绝缘特性进行了积极研究。
2
An eight-point scale called the "volcanic explosivity index" (VEI) allows you to compare eruptions and volcanoes.
你可以通过“火山爆发指数”(VEI)来比较喷发和火山，它把火山爆发分为8个等级。
3
The so-called Oruanui eruption was the most recent volcanic event to score the maximum 8 on the VEI – 10 times bigger than Tambora, and 100 times bigger than Krakatoa.
在这里的所谓奥努伊（Oruanui）喷发是最近的得分最高的火山事件，是10分的火山爆发指数（VEI）中得了8分，比坦博拉火山爆发要大些，比喀拉喀托火山爆发大100倍。

VEI
The volcanic explosivity index (VEI) was devised by Chris Newhall of the US Geological Survey and Stephen Self at the University of Hawaii in 1982 to provide a relative measure of the explosiveness of volcanic eruptions.Volume of products, eruption cloud height, and qualitative observations (using terms ranging from "gentle" to "mega-colossal") are used to determine the explosivity value. The scale is open-ended with the largest volcanoes in history given magnitude 8. A value of 0 is given for non-explosive eruptions, defined as less than 10,000 m3 (350,000 cu ft) of tephra ejected; and 8 representing a mega-colossal explosive eruption that can eject 1.0×1012 m3 (3.5×1013 cu ft) of tephra and have a cloud column height of over 50 km (31 mi). The scale is logarithmic, with each interval on the scale representing a tenfold increase in observed ejecta criteria, with the exception of between VEI 0, VEI 1 and VEI 2.

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