n.基钦
网络 贴心惊喜; 特青
John Kitching and colleagues at the National Institute of Standards and Technology (NIST) in Boulder, Colo., are designing atomic clocks that range in size from a sugar cube to a grain of rice.
在科罗拉多州博尔德的国家标准与技术学会(NIST)工作的John Kitching及其同事正在设计一系列微型电子钟,尺寸从一块方糖到一粒米大小。