The ice flashover accident of transmission line insulator is harmful for transmission line safe operation.

线路绝缘子发生覆冰闪络故障，对线路安全运行造成威胁。

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The menace of transmission line safe operation is the ice flashover accident of transmission line insulator.

线路绝缘子发生覆冰闪络故障，对线路安全运行造成了威胁。

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According to the usage, the insulators can generally be divided into three broad categories: line insulator, substation post insulator and bushings.

按用途一般可分为线路绝缘子、变电站支持绝缘子子和套管三大类。

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Starting with two silicon wafers, Soitec machines coat the surface of one with silicon dioxide insulator and embed inside it a thin fault line of hydrogen atoms anywhere from 100 to 20, 000 nanometers below the surface, depending on customers' desired wafer thickness.

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