短語詞組短語insulation blanket grade 絕緣等級(jí)electrical insulation grade 電絕緣級(jí)Insulation grade F 絕緣等級(jí)fill insulation up to grade 填滿到坡度線insulation grade anti -corrosion 絕緣耐熱等級(jí)grade insulation 分段絕緣high -grade insulation 高級(jí)絕緣grade of insulation 絕緣等級(jí) 返回 insulation grade