... time recording device 记时装置 time signal device 报时装置 time explosive device 指期望某一特定时候或事变出先才激活 ...
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If you want to time your running and walking intervals, you can use a watch or other device that beeps to signal when you need to switch.
如果你想对跑步和步行的间隔计时的话，你可以用一个手表或者其他能够发出哔哔声信号的设备当你需要转换的时候。
That way, the device responds quicker than it would if it had to download the data for triangulation each time from Apple, or wait a minute or so for the faint signal from a passing GPS satellite.
通过这种三角定位的方式，如果设备必须要从苹果上下载东西的时候，它每次的响应速度会比较快，否则的话，需要等待一分钟左右，以便接收经过的GPS卫星发出的微弱信号（进行定位）。
A device that is similar to a microprocessor, except that the internal CPU has been optimized for use in applications involving discrete-time signal processing.
一种类似于微处理器的的设备，不同的是它内部的CPU被优化，用于特定的应用，如离散信号处理。
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