发射激光 [
fā shè jī guāng]
lasing
- 科学家们向月球发射激光脉冲,测量从阿波罗太空人留下的3个反射器及苏联反射器弹回来的信号。
Scientists send laser pulses to the moon and measure signals that bounce back from three reflectors left by Apollo astronauts, along with another Soviet one. - 英国航空航天系统公司的布莱恩·霍瑞表示,在1.2千米至1.5千米的距离之间,安装在船只上的激光器可以发射激光作为警告,让海盗明白他们已经暴露。
At distances of between 1.2km (0.75 miles) and 1.5km (0.85 miles), the laser beam acts as a warning signal, letting the pirates know they've been spotted, said Brian Hore of BAE. - 要让这些激发的原子发射激光,这依赖于激光束焦点两个决定性的性质。
Getting these atoms to lase then relied on two crucial properties of the beam's focus.
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