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- Multistage sampling in forest inventory is not restricted to fixed-area sampling units. 森林资源清查中,多阶抽样并不局限于固定面积的抽样单元。
- Methods: 2807 subjects were randomly selected from four districts in Anshan by multistage sampling method. 方法采用多级抽样方法对鞍山市4个区共2807名居民过去1a中的伤害情况进行回顾性调查。
- Methods A total of 550 students in 4 junior schools were sampled with multistage sampling and surveyed. 方法通过多级随机抽样抽取济南市4所初中550名初一学生,采用问卷调查。
- 2807 subjects were randomly selected from four districts in Anshan by multistage sampling method. 方法采用多级抽样方法对鞍山市4个区共2807名居民过去1a中的伤害情况进行回顾性调查。
- multistage sampling in forest inventory is not restricted to fixed-area sampling units 森林资源清查中,多阶抽样并不局限于固定面积的抽样单元。
- multistage sampling 多级取样,多级抽样,多级采样,多阶抽样,多阶段抽样,多级抽样法
- stratified multistage sampling 分层多级抽样
- 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。
- A multistage rocket projects missiles into space. 多段式火箭把导弹发射至空中。
- Design of Multistage Power Amplifier in Ku Band. Ku波段多级功率放大器的研制。
- This paper studies a multistage survival model. 分阶段生存模型的均衡保费计算。
- It involves a subject known as isokinetic sampling. 这涉及所谓等速取样的问题。
- A multistage operation improves the thermal efficiency. 多层操作可以提高热效率。
- The concept of sampling will be presented below. 关于采样的概念,后面将要说明。
- There are many applications for random sampling. 随机抽样有许多应用场合。
- Sampling techniques and practices II. 抽样技术及其应用2。
- Soil sampling error in agricultural environment. 农业环境中土壤取样误差研究。
- The Sampling Handling Ultrasonic R. 机器人超声测距数据采集处理。
- Instrumentation is not a substitute for sampling. 检测不能替代取样。
- Multistage DDM overcome the limitations of the Gordon growth model. 多阶段DDM模型克服了戈登成长模型的限制。