switch track circuit 道岔区段轨道电路
track switch [电] 轨道开关 ; 跟踪电门
Track light Switch 槽灯开关
Signal and Track Switch Repairers 信号和轨道切换修理工
switch pair track 道岔股道
track switch detail 跟踪电门
This Deluxe roundhouse with 5 way switch track will spruce up any wooden train set.
这与5路开关跟踪奢华盘旋云杉任何木制火车。
Like in memory one can move freely back and forth in time, here you can switch track anytime to repeat a sequence.
就像人可以在记忆中随意的前进后退，在这里面你可以随意控制影像的进程。
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。
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