以下为句子列表：
英文: Abstract: According to the variation in content of characteristic radioactive nuclide and the close relationship between high-grade associated elements in ore-forming components and gold,the ground gamma-ray spectrometry and X-ray fluorescence slectrometr
中文: 文摘:通过测定特征放射性核素的含量变化以及利用成矿组分中一些高品位共生元素与金密切的相关关系，可利用地面伽马能谱与X荧光测量在现场快速揭示金矿化的存在，同时对金的品位进行准定量评价，以及指导野外地质采样和山地工程。
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英文: Current understanding divides gamma-ray bursts into those that last less than two seconds and those of longer duration.
中文: 当前的理论将伽马射线暴区分为两大类：持续时间低于2秒钟的，和持续更长时间的。
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英文: GLAST Telescope: On October 7, the Gamma-ray Large Area Space Telescope will launch into orbit and begin to observe our universe's most fascinating phenomena, including black holes, quasars and neutron stars.
中文: 格拉斯特天文望远镜：10月7日，伽玛射线大区域太空望远镜(GLAST)将发射升空，用以观察宇宙中最迷人的现象，包括黑洞、类星体和中子星。
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英文: Gamma-ray bursts (GRBs) are short flashes of gamma rays lasting between a few milliseconds and tens of minutes.
中文: 射线爆发（GRB）是短暂的γ射线闪光，过程可持续几毫秒到数十分钟。
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英文: In addition to the experiments reported in this article, he has worked on more down-to-earth applications, such as gammaray and neutron tomography and the construction of tunable gamma-ray sources.
中文: 除了本篇文章所谈到的实验之外，他也从事一些比较具体的应用研究，如γ射线、中子断层摄影术，以及可调γ射线源的建造。
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