查询词典 systematic sampling

After systematic sampling, we found abundant conodont fossils.

经过系统选样，发现了较为丰富的牙形石化石。

In this paper,on the basis of theoretically describing mathematics model of the optimum sample plots in certain monitoring area,systematic research and analysis had been carried out through realitic instances and sampling problem of the optimum sample plots had been solved effectively.

该文在理论描述特定监测区域最优样地数学模型的基础上，通过实例进行了系统研究与分析，有效解决了最优样地的抽样问题，所得结果可用于指导生产实践。

Of them were selected to participate dietary and physical activity survey as systematic sampling.

目的 分析评价膳食结构和身体活动度对攀枝花城乡居民血脂水平的影响。

In order to reduce the systematic error introduced by non-integer-period sampling, the spectrum correction methods were studied.

针对非整周期采样误差影响频率计算的精度的问题，研究了频谱校正方法。

The frame adopted for this survey was the telephone listings for the Taiwan Area. In order to avoid being unable to select those residences with unlisted telephone numbers, we first took a systematic random sample of telephone numbers, and then replaced the last digit with a random number. Respondents were chosen from within the selected household according to a set intra-household sampling procedure. The target for this survey was 1200 successful interviews.

本研究以台湾地区住宅电话簿作为抽样的母体清册，为避免未在电话号码簿上登记的用户无法被抽中进行访问的情形，抽样时首先依系统抽样的原则抽出某一电话号码，再以随机乱数取代此号码的尾数，作为访问的样本户，访问时再由访员依户中抽样的原则，抽出应受访的对象进行访问。

The frame adopted for this survey was the telephone listings for Tainan City. In order to avoid being unable to select those residences with unlisted telephone numbers, we first took a systematic random sample of telephone numbers, and then added one to the last digit. Respondents were chosen from within the selected household according to a set intra-household sampling procedure.

电话访问以台南市的住宅用电话用户作为抽样之母体清册，首先以等距抽样的原则抽出电话号码，为避免未在电话号码簿上登记的用户无法被抽中的情形发生，遂在抽出的电话号码的尾数加1，作为受访的样本户，实际访问时，访员再按洪永泰所设计的户中抽样原则抽出受访对象。

The frame adopted for this survey was the telephone listings for Taipei County. In order to avoid being unable to select those residences with unlisted telephone numbers, we first took a systematic random sample of telephone numbers, and then added one to the last digit. Respondents were chosen from within the selected household according to a set intra-household sampling procedure.

电话访问以台北县的住宅用电话用户作为抽样之母体清册，首先以等距抽样的原则抽出电话号码，为避免未在电话号码簿上登记的用户无法被抽中的情形发生，遂在抽出的电话号码的尾数加1 ，作为受访的样本户，实际访问时，访员再按洪永泰所设计的户中抽样原则抽出受访对象。

This paper carried out a systematic sampling and analysis on water quality of Jinan spring system.

对济南泉域岩溶地下水系统水质进行了系统的采样分析。

The current nutrient status of crops can now be determined through the systematic sampling of plants as appropriate times.

作物当时的营养状况，可在适当时期对植物的系统采样进行营养分析。

The recommended sample size for a systematic random sampling is 500 children.

系统随机抽样的推荐样本大小是500名儿童。

Newly designed quick-refill fuel tank cap and dust proof radio box back-up their impressive form by also contributing to the low center of gravity.

新设计的快速填充油箱盖和防尘电台方块备份其令人印象深刻的形式也有助于低重心。

The book is a spin-off from his master's thesis.

这本书是他的硕士论文的派生作品。