短語詞組短語polyethylene for power cable insulation 聚乙烯絕緣電力電纜power cable with extruded insulation 擠包絕緣電力電纜insulation power cable 絕緣電力電纜polythene insulation power cable 聚乙烯絕緣電力電纜oil -impregnated paper insulation power cable 油浸紙絕緣電力電纜 返回 power cable insulation