第五十二条 禁止将放射性废物和被放射性污染的物品输入中华人民共和国境内或者经中华人民共和国境内转移，法律、行政法规另有规定的除外。
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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Warner Bros. Discovery has rejected yet another Paramount bid.