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- Application of stratum sampling to classification of RS image. 应用分层采样技术进行大面积遥感图像分类的研究
- By trench observations and dating of fault rocks and stratum samples, it is proved that the fault has dislocated the stratum of middle Pleistocene. 经系列探槽的开挖，断层构造岩及有关地层样品作绝对年龄测定，证明东岗断层错断了中更新世地层；
- stratum sampling 分层抽样
- They represent each society stratum. 他们代表各个社会阶层。
- I spent a few days sampling the literature of social science. 我花了几天时间浏览有关社会科学的文献。
- They do not constitute a separate class or stratum. 知识分子和青年学生并不是一个阶级或阶层。
- He hates the privileged stratum. 他憎恨特权阶层。
- This is a stratum we must win over. 这一阶层，我们是必须争取的。
- Tramps are from the lowest stratum of society. 流浪汉来自社会最下层。
- It involves a subject known as isokinetic sampling. 这涉及所谓等速取样的问题。
- Is The Intermediate Stratum Forming in China? 中国的中间阶层正在形成?
- Modification of breather stratum about airslide. 空气输送斜槽透气层的改造。
- To form bends in(a stratum of rock. 地层褶曲（在地层的岩石上）形成弯曲
- The concept of sampling will be presented below. 关于采样的概念，后面将要说明。
- The lower stratum divides again into Ds and Es. 下层又分成D级和E级。
- There are many applications for random sampling. 随机抽样有许多应用场合。
- Such inequalities are found in every stratum. 这类不公平的现象存在于社会的每一个阶层。
- Sampling techniques and practices II. 抽样技术及其应用2。
- To form bends in(a stratum of rock). 地层褶曲（在地层的岩石上）形成弯曲
- Soil sampling error in agricultural environment. 农业环境中土壤取样误差研究。
