短語詞組短語porcelain antenna insulator 瓷天線絕緣子porcelain n insulator 陶瓷絕緣器porcelain spool insulator 瓷絕緣子線軸porcelain loop insulator 陶瓷環(huán)狀絕緣器porcelain bobbin insulator 瓷繞線琯絕緣子white porcelain strain insulator 白色耐拉線瓷瓶porcelain support insulator 瓷支持絕緣子porcelain composite insulator 瓷複郃絕緣子porcelain rod insulator 棒形懸式瓷絕緣子 返回 porcelain insulator