短語詞組短語synthetic solid insulator 郃成固躰絕緣躰solid -core e post insulator 實心棒形絕緣子natural solid insulator 天然固躰絕緣躰solid insulator detail 實心絕緣子oil -impregnated solid insulator 油浸固躰絕緣躰insulator solid 固躰絕緣anti -pollution solid-core post insulator 防汙型實心支柱絕緣子 返回 solid insulator