帽形轍尖軌 switch rail (point or tongue rail): 轉(zhuǎn)轍軌actual point of switch rail: 尖軌尖端switch point guard rail: 尖軌護軌switch point rail: 轍尖鋼軌theoretical point of switch rail: 尖軌理論尖端下載手機詞典可隨時隨地查詞查翻譯