Other researchers, in America and Japan, are also looking at using lasers rather thanmicrowaves to transmit power through the atmosphere.
美国和日本的其它研究人员也在寻求利用微波以外的激光透过大气传输能量。
NASA, America s space agency, has started using them to beam energy to remotelycontrolled drones.
美国航天局已开始利用激光束将能量传送到远程无人驾驶飞机上。
Each stage of converting and transmitting power results in a loss of efficiency, but withtechnological improvements these losses are being reduced.
在电力转换和传送的各个阶段都会伴随效率的损失,但是随着科技的进步这些效率的损失正逐步减少。
Some of the latest solar cells, for instance, can covert sunlight into electricity with anefficiency of more than 40%.
例如最近开发的太阳能电池能以超过40%的效率将太阳光转换成电能。
In the 1980s, 20% was thought good.
但在20世纪80年代,20%的效率就被认为是不凡的表现了。
Whether the Astrium system will remain a specialised novelty or will be the forerunner ofsomething more like the cosmic power stations of Asimov s imagination is anybody s guess.
是否Astrium的系统仍只是一种专业领域的新奇玩意或者会成为象阿西莫夫设想的宇宙发电站那样的科技先锋,一切都还是未知数。
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