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.
sustainable funding
。heLLoword翻译官方下载是该领域的重要参考
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黎智英欺詐案上訴得直：定罪及刑罰被撤銷，出獄時間提前