Almost 30,000 pieces of debris are calculated to be free-floating in space, created when rockets break up in space or satellites disintegrate.
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拉长时间线来看，有披露研发人员的企业数量从2021 年度的3895 家增至2025 年度的5309 家，五年间增长36.30%，增幅高于入库企业总数变动（20.81%）。随着这一增长，有披露研发人员的企业占比呈逐年攀升的态势，从66.60%增至75.15%。，推荐阅读夫子获取更多信息
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