It's called the Ring of Fire, a semicircle of violently shifting plates and volcanoes that runs along the edges of the Pacific Ocean.

这里被称为火圈带，一个由剧烈移动的板块和火山组成的半圆形区域，分布在太平洋沿岸。

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The effect V-ring indenter on the sheared surface in the fine blanking of shifting fort is investigated by means of finite element method.

使用有限元分析法对拨叉零件的精冲过程中V形齿圈对冲剪面的影响进行了研究。

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