千亿、百亿和十亿研发投入规模区间企业合计379 家，合计研发投入约1.94 万亿元，企业数量占比不到一成，却贡献了整体研发投入的七成以上（71.52%）。这一占比较上年（70.68%）继续增加。
Wide-field quantum sensing shows μm-scale inhomogeneous superconductivity in high-pressure La3Ni2O7, linking local diamagnetic response to stress and stoichiometry and clarifying mechanisms that suppress or enhance superconductivity.
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