在各年龄组和不同种族中比率一致，但随性别、地理位置和时代而改变。

Rates were consistent for age groups and races, but varied by gender, geographic location and period.

youdao

命中磁盘的读请求数除以读请求总数就是不中比率——在本例中每1,000个请求，大约有0.6个没有命中内存。

Dividing the reads by the read requests gives the miss rate — in this case, 0.6 misses per 1,000 requests.

youdao

而且，德姆·查克和他的同事们完全知道，如果相关性比率在现实中比统计专家假定的高一点点，就会导致严重的损失。

And Demchak and his colleagues knew perfectly well that if the correlation rate ever turned out to be appreciably higher than the statisticians had assumed, serious losses might result.

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