Various approaches have been taken to eliminate spatial hole burning, in order to achieve single frequency operation, the most widely used being the unidirectionalring laser.
为了使激光器单频运转，应用了许多方法来消除空间烧孔。
2
The V-shaped unidirectional clutch is made of inner ring, outer ring, wedge and driven disk.
所设计的楔块式低副单向超越离合器，主要由内环、外环、楔块和拨盘等构件组成。
3
The insulating rubber sealing layer is stuck on the surface of the unidirectional weftless tape banding layer for the commutator. The ring groove is arranged at the end of the commutator plate.