High voltage post insulators of ceramic material . part 2 : dimensions and characteristics 高压支柱瓷绝缘子第2部分:尺寸与特性
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Pin insulators of ceramic material for high voltage overhead lines - dimensions and characteristics 高压线路针式瓷绝缘子尺寸与特性
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Specification for low voltage switchgear and controlgear for industrial use - control switches - position switches 30 x 55 - dimensions and characteristics 工业用低压开关设备和控制装置规范.控制开关.位置开关35x55 .尺寸与特性