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Electro-geometric (EGM) model is now the most popular method for the shielding failure flash-over rate(SFFOR) calculation. 绕击是超高压、特高压输电线路雷击跳闸的主要原因,山区绕击跳闸率计算相对平原更为复杂。
Abstract: Shielding failure is the main cause of lightning flash-over of EHV transmission lines and UHV transmission lines. 摘要: 绕击是超高压、特高压输电线路雷击跳闸的主要原因，山区绕击跳闸率计算相对平原更为复杂。
The electrogeometric model (EGM) described with striking distance has been widely used in the shielding failure analysis of transmission line. 使用击距描述的电气几何模型广泛用于输电线路的雷电绕击分析。
He tried to put a bold face on his failure. 他对自己的失败装出一副满不在乎的样子。
The cake we made was somewhat of a failure. 我们做的蛋糕不大成功。
Electro-geometric （EGM） model is now the most popular method for the shielding failure flash-over rate （SFFOR） calculation. 为提高山区线路绕击跳闸率的计算精度，在现场调研的基础上，利用蒙特卡罗法和改进的电气几何模型研究了山区复杂地形下输电线路的绕击特性，总结出了包括山顶、山谷、沿坡、爬坡、跨沟等各种典型的山区复杂地形下的绕击跳闸率计算模型，并且计算了各种典型地形下，不同坡度、不同沟深、不同杆塔高度的绕击跳闸率变化规律。
Besides there is only one direction of zero modal current when shielding failure occurs, which makes zero modal voltage increases monotonically. 若发生绕击故障，零模电流只沿一个方向，使保护安装处零模电压在故障后一段时间内呈现单调变化。
Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
With such model the effect of tower structure,lightning current amplitude,angle of the lightning incidence,as well as the ground angle on the shielding failure rate are analyzed. 应用改进的电气几何模型分析了输电线路杆塔结构、避雷线和导线的布置、雷电流的幅值、地面倾角对绕击率的影响。
Experimental methods and models were analyzed,such as standard method,electrical geometric model(EGM),leader progression model(LPM) and shielding failure probability model. 分析了几种雷电绕击研究方法或模型,如规程法、电气几何模型、先导发展模型、绕击概率模型。
He lied to the court to shield his friend. 他对法庭说谎以包庇自己的朋友。
The sword glanced off the shield. 剑擦过盾牌。
He was bewailing his failure in the examination. 他为考试不及格而悲伤。
She was constantly spurred on by a fear of failure. 对失败的恐惧不断地激励着她。
He was stripped down for his failure in the exam. 他考试不及格受到严厉责骂。
The failure of the plan was laid at his door. 这个计划失败被归罪于他。
A pad or shield of cloth worn over an eye socket or an injured eye. 护眼片，眼罩带在眼窝或受伤的眼上的垫子或布片
His plan was foredoomed to failure. 他的计画注定要失败。
A pair of horizontal parallel lines drawn across a shield. 盾形纹章上的横条纹画在盾形纹章上的两条水平的平行线
He ascribed his failure to bad luck. 他把失败归于运气不佳。