double petticoat insulator
... petticoat insulator 裙状绝缘子,裙式隔电... double petticoat insulator 双裙绝缘子 multi-petticoat insulator 多裙式绝缘子...
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短语
双裙式瓷绝缘子
double-shed porcelain insulator
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double petticoat insulator
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double petticoat insulator
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double petticoat insulator
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