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.
strict.writer.write(chunk2); // ok (fills slots buffer)。新收录的资料是该领域的重要参考
Россия вышла из соглашения с ООН14:29。关于这个话题，新收录的资料提供了深入分析
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