没有关于医疗差错的代码就无法对问题进行研究或纠正。
Without a code for medical error, the problem cannot be studied or corrected.
通信系统，接收器，纠正信道差错的装置和方法。
Communication system, receiver, device and method of correcting error of information channel.
对一定的差错进行检测、分析和纠正是必须的。
It is necessary to detect, analyze, and correct certain errors.
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