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Current X-ray lasers require facilities that are kilometres long. A cavity-based set-up about 66 metres in length has been developed that uses highly reflective mirrors to enable the generation of high-intensity pulses of narrow-band X-ray radiation. This promises to overcome the limitations of current X-ray lasers.
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Mr Fingleton added: "Motorways wouldn't be very useful if we all drove at five miles (8km) an hour, but that's sort of what we're doing in nuclear safety."
被释放十五天后，她再度逃亡，未与任何人告别，只对她的母亲说了一句：“妈，我走了。”离开为自己哭泣的母亲，她带着三舅，每人花费十盎司黄金，穿越中国南海，十五天后抵达安全之地，旋即飞往德国。她回忆，当时想去美、法的人，须先滞留泰国难民营五年，而她自觉“去哪都行”。