背向轉(zhuǎn)轍器 trailing switch: 順向轉(zhuǎn)轍器trailing point: 瘤點(diǎn)trailing switch machine: 背向轉(zhuǎn)轍器trailing point crossover: 背向渡線point of switch: 轉(zhuǎn)轍器尖下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
