人体比例研究 Proportion of the Human Figure
又称病例参比式研究 case-base reference study
气动比例流量阀的研究 Proportional Flow Valve
比较案例研究 Comparative Case Studies
配比病例对照研究 Matched case-control study
频数配比病例对照研究 Frequency matched case control study
一项研究表明，轻度烟民患白内障的比例是不吸烟者的两倍以上。
In one study, light smokers were found to be more than twice as likely to get cataracts as non-smokers.
这项研究比较了全世界37个城市投入交通运输的财富比例。
The study compared the proportion of wealth poured into transport by thirty-seven cities around the world.
根据 Catalyst 的一项研究，2010年至2015年间，全球公司董事会中女性的比例增加了54%。
According to a study by Catalyst, between 2010 and 2015 the share of women on the boards of global corporations increased by 54 percent.
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