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可在安卓獲取CN Signals Flash Cards的歷史版本
CN的應用研究聯繫我們或塊和聯鎖信號
An educational application for CN employees to study USOR block and interlocking signals using flash cards. One side of a presented card is the signal image, the user may then “click” to flip the card over to reveal the signal's name and indication.Last updated on 2019年04月15日
Can now select multiple card groups at a time.
Card groupings were adjusted.
CN Signals Flash Cards (USOR)
1.4.2 by AllRail Inc.
2019年04月15日