Distribution of outcome at 3 years was examined by stratifying according to baseline status.

根据基线状态，分层检验3年中结果分布。

The characterization and evaluation method of the self- stratifying coating film are discussed.

讨论了涂膜的表征和评价方法；

The self-stratifying behavior between epoxy resin and acrylic resin is investigated in different blend solvents.

摘要选择不同的混合溶剂体系考察部分相容的环氧树脂和丙烯酸树脂的自分层行为。

CONCL USION: the calculation formulas of multiple - stratifying and clustering random sampling are theoretically set up.

结论：推导并建立多重分层、整群随机抽样误差的计算公式。

The scavenging system is composed of crankcase, main scavenging passage, sub passage stratifying pipe, reed valve and carburettor.

该分层扫气系统由曲轴箱、主扫气道、副扫气道、分层管、笛簧阀和化油器等组成。

The main approach to solve this problem is to stratify the population studied through taking the confounder as the stratifying variable.

解决这一问题的主要方法是将混杂因子作为分层变量把被研究群体分层。

Because all risks may not be equal, stratifying high-risk patients may further help target patients most likely to benefit from prophylaxis.

由于所有的危险因素并不都等同，对高危患者进行分层可为患者从预防性用药中受益提供更好的靶向性。

In this paper, the analytical solution of massive concrete temperature field of one dimension in stratifying construction of large bridge is presented.

提出了大型桥梁中大体积混凝土成层浇筑过程一维温度场的解析解。

Method To carry out the comprehensive investigation on the medical quality of 24 different level hospitals in this area, which selected by stratifying sampling.

方法：采用分层抽样调查方法，对本区域24所不同级别医院的医疗质量进行全面调查。

By this method the accuracy and speed of the rough cutting processing can be improved. The efficiency of the die adaptive nc rough machining based on stratifying method is increased.

应用该方法可以减少粗加工余量，提高粗加工精度和速度，提高了层切法模具零件数控粗加工效率。

The theory of stratifying and complex planting pattern is ulteriorly quantificationally deepened. As a result, the scientific basis is provided for theoretically searching into tea planting pattern.

从定量的角度进一步深化立体复合种植模式的理论研究，为理论上探讨茶叶的种植模式提供科学依据。

Five hundred subjects may sound like a lot, but once you start stratifying them by age, by whether they received all of their shots, or which year they were immunized, your total number gets smaller.

五百名受试者可能听起来很多，可是一旦你按年龄、是否接受疫苗以及哪年接受疫苗将他们分类，你的总人数就变得更小。