But the study, by two Chinese university professors and a London researcher, provides some of the first hard data on the extent of the disparity and the factors contributing to it. 但是一份來(lái)自?xún)蓚€(gè)中國大學(xué)教授和一個(gè)倫敦研究員的論文,提供了男女人數差距和產(chǎn)生要素的第一手硬數據。