光学速调管的英文：
n. optical klystron

Optical brightener(Optical brightness agent): Synonymous with Optical bleaching agent.
光学增光剂:即光学漂白剂。

Optical depth and optical path are often confused in the literature.
文献中光学厚度和光程时常混淆。

A computer that is made of optical fiber and various optical elements
一种利用传递光信号的光纤与各种光学元件相结合而制成的计算机。

optical sighting device
光学照准器

A kaleidoscope is an optical toy.
万花筒是一种光学玩具。

The electronmagnetic wave is produced by microwave tubes called klystrons
电磁波是由一种称为速调管的微波电子管产生的。