文件名称:jiaotongd
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能显示十字路口东西、南北两个方向的红、黄、绿灯的指示状态，用两组发光管表示两个方向的红、黄、绿灯。-Can show the crossroads, North and south two directions of red, yellow, green light of the state, with two sets of light emitting tube in the red, yellow, green light in two directions.
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jiaotongd.doc