分层

This is the first study we know of that has independently validated a risk stratification system for bariatric surgery.

这个是我们知道的第一个对于肥胖手术的独立确认危险分层系统。

Based on the analytical result, we propose an improved stratification method.

根据分析结果，本文定义了该改进分层方法。

Chinese scholars pay more attention to two aspects of Chinese social stratification.

中国学者研究中国社会分层问题主要集中在两个大的方面。

So have the social ecology of social stratification.

如此才有了社会生态中的社会分层现象。

Cluster analysis of directional data is important to temporal clustering analysis of disease and stratification of season.

方向数据的聚类分析法对与疾病的时间聚集性进行分析、季节分层分类等有极其重要的意义。

In the second part, the thesis analysed the changes of social stratification in China during the translational period.

在第二部分中，论文着重分析了转型期我国社会分层的变化。

The study of social stratification is in recent years becoming a notable and important subject in modern sociology.

社会分层是当代社会学最引人注目的研究课题之一。

Methods A self-designed questionnaire survey was used to investigate a cluster stratified sample of 1010 college students.

采用分层整群抽样的方法，对广州市1010名大学生进行问卷调查。

Methods:Stratified multiple phases sample method was adopted, 240 female doctors were assessed.

采用多阶段分层抽样方法对240名三级甲等综合医院的女性医生进行调查。

Methods A questionnaire survey was conducted to a clustered stratified sample of1785children in Qingdao.

采取分层整群抽样的方法对青岛市1785名儿童进行问卷调查。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。