The system can realize traffic signal control to signalized intersection with difference signal phase and coordinated control of traffic signals.

该系统能对不同相位的信号交叉口的信号进行控制，同时具有信号的协调控制功能。

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For resolving this problem we design a kind of difference signal convertor. Through using the difference signal convertor the step motor is effectively controlled.

针对这一问题设计一种差分信号转换器，有效地实现了步进电机控制功能。

youdao

Without conscious intent and the synchronizing signal of short iterations it is hard to notice the difference between being on the path and off the path unless you stay on the path for a while.

如果不是有意识地打算这样做，也没有短期迭代的同步信号，那么除非你在这条路上呆了很久，否则就很难注意到是否走错了路。

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But taken together, they can make a difference and they send a signal that we are serious about changing how government operates,"

VOA: standard.2009.04.20

The difference is that the signal for "Game Over, " in this case a digital tombstone, pops up much later.

CNN: Virtual Nurture

Even if these figures are approximate, and if the structure of their economies goes some of the way to explaining these difference, they certainly signal an immense margin for improvement.

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But while each of the previous cases seems almost lost to memory now, it is the national outpouring of outrage from people of all backgrounds in response to the Trayvon Martin case that could signal the difference between the last century and this one.

CNN: Trayvon's killing and Florida's tragic past