Signal and Track Switch Repairers 信号和轨道切换修理工
track switch detail 跟踪电门
automatic frequency track switch 频率自动跟踪开关
Track light Switch 槽灯开关
switch track 铁路支线
switch track circuit 道岔区段轨道电路
Other alternative input devices include single switch devices, devices that track head movements, and alternative keyboards for persons with mobility impairments.
其它可选择的设备包括单一切换设备、跟踪头部移动的设备，和用于行动困难的人可选择的键盘。
Given everything that happened, rain at the start, the safety car, the switch to slick tyres when the track was still very slippery - we did a great job.
发生了那么多的事情，开始阶段的雨，安全车，在赛道还很湿滑时换上软胎——但我们还是干的非常好。
Bejerano and colleagues took the switch information from a chimpanzee's genome and essentially "hooked it up" to a reporter gene, a gene whose effects scientists can track as an organism develops.
Bejerano和同事们从黑猩猩的基因组提取开关信息，把它们附加到一组可以报告的基因上，当生物发育时，科学家们可以跟踪这组基因的影响。
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