另一方面，光学钟却更为精确。
同样的，光学钟有望在准确性方面发生飞跃之后，一些更好的事情也将可能会发生。
He says something similar could well happen with the quantum leap in accuracy that optical clocks promise.
它们还使光学原子钟的建立成为了可能，预计比当今最好的计时系统还要精确100倍。
They also are making it possible to build optical atomic clocks, expected to be as much as 100 times more accurate than today's best time-keeping systems.
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