corona ring

Clearly drawn is not only a total solar eclipse, but the solar corona and the diamond ring effect visible when sunlight flows only between mountains on the Moon.

很明显画中并不仅仅是日全食，其中还能看到日冕以及当日光刚从月球山峰之间露出时出现的钻石环效应。

Optimization of corona ring design for EHV composite insulator using finite element and neural network method

基于有限元和神经网络方法对超高压合成绝缘子均压环结构优化的研究

The author calculates distribution of electric field and potential under three cases: both the high voltage and grounding end with and without corona ring, and only the high voltage end with corona ring.

计算了在清洁合成绝缘子高压端、接地端两端安装均压环、未安装均压环以及只在高压端安装均压环的电场和电位分布；