直方图用于计算谓词的选择率。
Histograms are used to calculate the selectivity of the predicates.
能量流与pt100的选择率测量。
反应的转化率和选择率均可达到98%。
优化器可以使用数据分布来计算查询中过滤器的选择率。
The optimizer can use data distributions to calculate selectivity for the filters in a query.
本文观点而被视为最好的选择率低的信用卡适合自己的生活方式。
This article discusses the points to be considered while choosing the best low rate credit cards suited to one's lifestyle.
菌株确认及药敏试验报告滞后，导致治疗前期的敏感品种选择率偏低。
The delay for the bacteria confirmation and the sensitivity test reports leads to lower for the selection rate of sensitive kinds during the early treatment.
结论：使用腕带的选择率明显高于床头卡，腕带的使用在产科病房值得推广。
Conclusion: the choice of using the wrist strap was significantly higher than bedside CARDS, wrist straps used in maternity wards are worth promoting.
选择率是介于 0 到1 之间的一个值，表示表中能通过过滤器的行所占的百分比。
The selectivity is a value between 0 and 1 that indicates the percentage of rows within the table that the filter can pass.
但是，如果没有数据分布，则数据库服务器根据表索引计算不同类型的过滤器的选择率。
However, in the absence of data distributions, the database server calculates selectivity for filters of different types based on table indexes.
相反，正常的小鼠则只有1/3的正确选择率，这与从三块板子中随机选一的概率相同。
By contrast, normal mice only chose correctly one third of the time, the score that one would obtain by guessing randomly among the three panels.
奥森研究了关于孩童玩电子游戏的动因报告并发现他们选择率最高的原因是寻找乐趣，与同伴竞争以及接受挑战。
Olson surveyed children's reported motivations for video game playing and found that their top rated choices were to have fun, compete well with others, and to be challenged.
早期世代蛋白质含量的选择强度不宜太大，F2代的选择率以15%为宜，而F3和F4代的选择率以10%为宜。
In the early generations the selection should not be too strict, and 15% selection intensity was suitable in F2 generation, but 10% was suitable in F3 and F4.
早期世代蛋白质含量的选择强度不宜太大，F2代的选择率以15%为宜，而F3和F4代的选择率以10%为宜。
In the early generations the selection should not be too strict, and 15% selection intensity was suitable in F2 generation, but 10% was suitable in F3 and F4.
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