短語詞組短語synthetic solid insulator 合成固體絕緣體solid -core e post insulator 實(shí)心棒形絕緣子natural solid insulator 天然固體絕緣體solid insulator detail 實(shí)心絕緣子oil -impregnated solid insulator 油浸固體絕緣體insulator solid 固體絕緣anti -pollution solid-core post insulator 防污型實(shí)心支柱絕緣子 返回 solid insulator