2021—2025 年度，无论披露研发投入的企业数量/占比，还是研发投入总额/平均值，都呈整体上升趋势。
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China's Long March 5B booster re-entered over the Indian Ocean in 2022, and the Tiangong-1 space station mostly burned up over the Pacific in 2018.。业内人士推荐91视频作为进阶阅读
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Organ donation: 'Mum said we don't do it. So we don't'