selectivity ratio

Stock selectivity, stock ownership convergence and the fund type show a greater influence on the yield of funds, whereas the expense ratio, investment type and the fund scale have relatively little effect on the yield.

基金选股能力、持股集中度、基金公司类型对基金收益的影响较为明显，基金费用比率、投资类型、基金规模对基金收益的影响较小。

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Increasing the H2/ CO ratio in feed, the selectivity of C5~ C11, methane and other low carbon number hydrocarbons will increase, while that of C12~ C18 and C19+ will decrease.

原料气H2/CO比提高，甲烷、C2~C4、C5~C11的选择性增加，C12~C18和C19+的选择性下降；

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In the range of room temperature ( about 20~ 30), 100% propylene conversion and 87% selectivity of isopropyl benzene was obtained when the ratio of benzene to propylene was 8:1 in weight and the amount of catalyst was 1/ 3 weight of benzene;

在室温范围内（20～30℃），当苯与丙烯质量比为8：1，离子液体催化剂的用量占苯质量的1／3时，可获得100%的丙烯转化率和87%的异丙苯选择性；

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