短语词组短语petticoat insulator 裙状绝缘子;[电]裙式绝缘子;裙式隔电子double petticoat insulator 双裙绝缘子;翻译multi -petticoat insulator 多裙式绝缘子petticoat of insulator 绝缘子外裙double petticoat porcelain insulator 双裙瓷绝缘子 返回 insulator petticoat