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https://sourceforge.net/p/industry-reports-2017-part1/code/ci/master/tree/2017%E5%B9%B4%E4%B8%AD%E5%9B%BD%E9%9D%9E%E5%AD%A6%E5%8E%86%E8%81%8C%E4%B8%9A%E6%8A%80%E8%83%BD%E5%9F%B9%E8%AE%AD%E8%A1%8C%E4%B8%9A%E6%8A%A5%E5%91%8A.pdf?format=raw