They were all discovered. Ytterbium, Terbium and Erbium were all derivatives of that town name.

他们都被发现了。 Ytterbium、Terbium 和 Erbium 都是该镇名称的派生词。

To counteract this, physicists engineered a double-clock system, with two sets of ytterbium atoms being sampled by the same laser.

为了抵消这一点，物理学家设计了一个双时钟系统，用同一束激光对两组镱原子进行采样。

This is designated Ytterby Mine, a historical landmark for the discovery of four periodic elements: yttrium, terbium, erbium, and ytterbium.

这被命名为 Ytterby 矿，它是发现四种周期性元素：钇、铽、铒和镱的历史里程碑。

They use ytterbium or strontium – atoms that oscillate at visible light frequencies – and sync up lasers to the atomic oscillations for timekeeping.

他们使用镱或锶——以可见光频率振荡的原子——并将激光与原子振荡同步以进行计时。