短語詞組短語stopper -rod control 毫棒控制Elecro -mechanical stopper-rod 電動塞棒stopper rod ladle 塞桿式底注澆包SPRING - STOPPER ROD 限位桿內彈簧stopper rod assembly 涵義塞棒裝置water cooled stopper rod 水冷塞棒stopper rod control 塞棒控制air -cooled stopper rod 空冷塞棒芯Welding rod stopper 連桿 返回 stopper rod