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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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第五十四条 境外个人和组织利用网络向中华人民共和国境内实施诈骗、赌博、传播淫秽物品等犯罪活动的，对其犯罪所得及利用犯罪所得投资的企业、有价证券、不动产等资产，应当依法查封、扣押、冻结；经人民法院审理，可以依法没收。有关主管部门可以作出限制其在境内直接或者间接投资的决定。
It had previously been thought that vaccinating children against chickenpox would cause a problematic rise in the linked condition shingles, but a recent long-term study from the US disproved that theory.
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