It lets you know if your unit is receiving word clock correctly.
如果你的单位正确正在收到词钟，那么它让你熟悉。
Experimental results show that the slow cesium atomic clock time a very small unit.
结果实验表明铯原子钟慢了很小的一个时间单位。
Experimental results show that the slow cesium atomic clock time a very small unit.
结果实验表明铯原子钟慢了很小的一个时间单位。
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