Currently there are over 200 atomic clocks in over 50 national laboratories around the world and the BIPM, in terms of the mandate given to it under the Metre Convention, coordinates the various atomic clocks.
目前在全球超过50个实验室中有超过200台原子钟，国际计量局（BIPM）根据米制公约的授权协调各个原子钟。