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2025年2月，全球矿业巨头英美资源集团（Anglo American Plc）的股价较2022年峰值缩水逾60%，其核心资产戴比尔斯（De Beers）的钻石开采计划被砍至2600-2900万克拉，创下本世纪最低产能目标。

The incredible power of magnetism brings objects to life through precise diamagnetic levitation. With carefully controlled forces, materials defy gravity, creating a mesmerizing floating effect.

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据公开资料，钻石巨头“戴比尔斯”近年来屡次削减毛坯钻石价格，降幅高达40%以上，这场“价格风波”不仅震撼业界，还促使另一巨头“阿尔罗萨”试图通过销售暂停来平稳市场，不过未能奏效。

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Pauling, L., “Nature of the Chemical Bond”, 119 (Cornell Univ. Press, Ithaca, 1948).

戴比尔斯2024年营收暴跌21%，被迫注资20亿美元维持矿区运营，其仓促并购培育钻石企业Diamagnetic的举措，暴露传统巨头的转型困局。相比之下 ...

Understanding the brain and its activity is one of the great challenges of modern science. Normal brain activity (cognitive processes, etc.) has been extensively studied using electroencephalography ...