感染前头孢他啶的平均使用时间为13.3天，平均住院时间40.3天。
The average period of administering ceftizime was 13.3 days and the average hospitalization time 40.3 days.
每个应用每天的平均使用时间加起来就到15.9个小时，这比每天8小时的标准工作时间要长多了。
The average time reported for "using" each application every day added up to a total of 15.9 hours, much longer than the standard 8-hour work day.
我们发现，当 CPU 不处理随机操作时，其对于 zipSeries 服务器的平均使用时间下降大约 15％。
We found that, on average, CPU use time for the zipSeries server decreased by about 15% when it was not handling randomization.
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