中国研究人员推动美国在建造超精确核时钟的竞赛中领先 || Chinese researcher pushes US ahead in race to build ultra-precise nuclear clock

研究生张传坤帮助实验室确定激光频率，以驱动可测试物理学基础的计时器。

via News - South China Morning Post (author: Ling Xin)