抽样检验

Methods With multi-stage stratified random cluster sampling, 3835 persons were selected for observation from 145 608 coal mine employees on the list.

采取多阶段分层随机整群抽样方法从某煤矿集团145608名在册员工中抽取3835人为观察对象，进行问卷调查，现场测量血压、身高、体重、腰围及检验血糖、血脂。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。