class StockSpanner {
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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The college basketball season is heating up, with March Madness now just weeks away. And today sees a big Midwest showdown as the Michigan Wolverines cross two state lines to face Illinois Fighting Illini. It's an exciting clash that could prove decisive in the Big Ten Conference — the Wolverines and Fighting Illini are both in the top three of the Big Ten standings.
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