守时系统是一种需要连续、可靠运转的复杂系统，包括守时钟组、比对测量系统、原子时归算等多个环节。
A time keeping system consists of atomic clock assembly, measuring and comparing system and computation of atomic time scale, etc.
守时系统是一种需要连续、可靠运转的复杂系统，包括守时钟组、比对测量系统、原子时归算等多个环节。
A time keeping system consists of atomic clock assembly, measuring and comparing system and computation of atomic time scale, etc.
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