抽样

Questionnaires are collected from 280 college students in Hunan University of Science and Technology by random sampling.

采取随机抽样法在湖南科技大学抽取280名大学生进行问卷调查。

Using simple random and system sampling methods, we investigated 1205 disabled persons in Beijing.

本研究采取简单随机、等距抽样等方法在北京市抽取了1205名残疾人进行调查。

Using random sampling method to improve the classifier in the non-equilibrium generalization performance on data sets.

使用随机抽样的方法以提高分类器在非平衡数据集上的泛化性能。

Though stratified random sampling method is adopted for the arterial and collector functional systems, there is a good potential to improve it.

尽管分层随机抽样的方法已经在干线和一般的集散系统得到利用，它仍有很大的发展空间。

Survey is also available on the web for input from clubs that were not in the random sampling.

调查也扩及由扶轮社於网上输入资料，这并不包括在随机抽样中。

The reason is simple: most lack the home phone number needed for random sampling.

原因很简单：大多数的人都没有固定电话以供随机抽样。

Methods A total of 3 594 floating people were selected in the questionnaire investigation with random sampling.

采用随机抽样方法，对广东省3 594名育龄流动人口进行问卷调查。

With the methods of DEXA, this paper investigates undergraduates of the Hebei normal university from 7 sports items athletes of kickboxing, long-distance running, sprint, football basketball, rassle and jump .

典型抽样选择河北师范大学跆拳道、长跑、短跑、足球、篮球、摔跤和跳远七个项目，共139名符合实验要求的志愿者，进行了DEXA体成分测试。

Based on these results,the sampling-rate conversion theory for the FRFT with a rational fraction as conversion factor is deduced.

最后，本文通过仿真对导出的分数阶Fourier域多抽样率理论进行了验证。

With the texture memory spaces, the sampling costs one memory read from the device memory only on a cache miss.

纹理与记忆空间，抽样成本从一读记忆存储装置只有一个缓存小姐。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。