若按研发投入规模，将企业划分为千亿、百亿、十亿、亿及千万元等不同区间，我们发现研发资源的集中趋势尤为显著，头部企业在创新活动中发挥引领作用。
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Apple kicked off its "big week" by announcing the latest budget iPhone, its first with MagSafe, alongside an updated iPad Air. The new iPhone 17e is set for release next Wednesday, March 11, and preorders open this Wednesday, March 4. (This story will be updated with retailers' preorder listings as soon as they're live.)。业内人士推荐Line官方版本下载作为进阶阅读
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