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.
// console.log(nextGreaterElement([2,4], [1,2,3,4])); // 预期输出：[3,-1]
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The first race of the season is next week in Australia (March 6-8). Practice begins Friday with qualifying on Saturday and the grand prix on Sunday. Or if you live in the US, that will be Thursday night through Saturday night (race begins at 11PM ET).，更多细节参见heLLoword翻译官方下载
Медведев вышел в финал турнира в Дубае17:59