中国每年的专利好像已经超过美国了。

来源: 研究研究于 2016-03-24 10:06:28 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.