不是要去控制天气，激光束实际上是用来校准欧洲南方天文台强大的望远镜。
Rather than controlling the weather, the laser beam is actually used to calibrate the ESO's powerful telescopes.
Yepun望远镜发出的激光束在地球大气层上空56英里(90公里)处形成了一颗人造恒星。
Yepun's beam creates an artificial star 56 miles (90 kilometers) up in Earth's atmosphere.
探讨这种发散纤维透镜用作激光束变换元件的设计原理以及在望远镜式扩束型光学耦合系统中的应用。
The design principle of this defocusing fiber lens used as laser beam transforming device and application in an expanded beam coupling system are discussed.
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