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DANGER INDICATION PREVENTIVE CIRCUIT IN TRAFFIC SIGNAL CONTROL DEVICE
DANGER INDICATION PREVENTIVE CIRCUIT IN TRAFFIC SIGNAL CONTROL DEVICE
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机译:交通信号控制装置中的危险指示预防电路
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摘要
PURPOSE:To obtain a traffic signal control device equipped with a danger indication preventive circuit which needs not be removed for inspection under the category of such danger indication preventive circuits which are so designed as to actuate the device to be on the safety side.
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