然而卡洛·康泰迪说，用GPS人造卫星来同步时钟，远远达不到这个准确度，这是因为GPS人造卫星的信号本身也受到重力时间膨胀效应的影响。

But Contaldi says that GPS synchronization is not nearly that accurate, because GPS satellite signals are themselves subject to gravitational time dilation.

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首先，平常的RISC计算机是同步的，由一个时钟提供一个同步的信号。

First, the usual RISC is synchronous, supplied a clock single by a clock element.

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时钟脉冲，用于同步的连续脉冲信号串。

CLOCK SIGNAL, a continuous string of pulses used for synchronization.

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