non-contact recording
非接触式磁记录 [计] non-contact magnetic recording
这一系统利用射频无线电对记录媒体进行读写操作，完成对马拉松运动员的非接触式自动识别，从而实现运动员成绩计时。
Through identifying no touched automatically the Marathon runner, the timekeeping record of the runner was obtained by utilizing radio frequency to read and write recording medium.
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