增长的原因，一方面是上市企业新陈代谢，部分退市，以及IPO带来新鲜血液。另一方面是越来越多企业开始投入研发，并主动披露研发相关数据。
The partnership didn’t last long, though, with Nintendo backing out before it ever really got off the ground, announcing that it would instead be working with Philips. Sony decided to make the PlayStation on its own instead, in an act of revenge that you have to say paid off in the long run, and we never did get to see Crash Bandicoot running around the Mushroom Kingdom. Still, the short-lived Nintendo PlayStation remains a fascinating what-if scenario in video game history, and the USA’s National Video Museum has acquired the original development kit.
。新收录的资料是该领域的重要参考
（一）战争、武装冲突、恐怖活动或者不可抗拒的自然灾害；
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