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.
int i = 0, j = 0, k = left; // i:左数组指针, j:右数组指针, k:原数组指针
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13:12, 27 февраля 2026Из жизни
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