根据精确资料求得的预期数额。
Expectancy n. An expected amount calculated on the basis of actuarial data.
研究人员抓紧时间收集有关的精确资料。
The researchers made the best use of their time to collect exact data concerning.
这个研究诊所和县都保留有关居民的卫生保健和住院治疗的精确资料。
Both the research clinic and the county have kept precise records on the health care and hospitalization of its residents.
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