A method of systematic sampling has been adopted for Ailuropoda melanoleuca in Foping Nature Reserve.
已对佛坪自然保护区的大熊猫采用系统采样的方法。
A method of systematic sampling has been adopted for Giant panda (Ailuropoda melanoleuca) in Foping Nature Reserve.
已对佛坪自然保护区的大熊猫采用系统采样的方法。
The efficiency of regression estimate was usually higher than systematic sampling.
通常情况下，回归估计的效率高于系统抽样。
The outpatients expenses in a teaching hospital in Shiyan were investigated by means of systematic sampling.
本文采用系统抽样的方法，调查了某医院门诊病人费用情况及有关因素。
A method of systematic sampling has been adopted for Giant panda ( Ailuropoda melanoleuca) in Foping Nature Reserve.
采用系统抽样方法对佛坪自然保护区大熊猫的夏季栖居地进行了研究。
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。
Method 15 hospitals and 2 937 residents were selected and studied through random and systematic sampling methods in Hainan Province.
方法 采用分层抽样和随机抽样方法对15家 医疗机构和2 937名疟区居民进行流行病学调查。
Line transects of systematic sampling were used to survey the fundamental characteristics of the environmental variables in the study area.
通过系统取样的样线法调查整个研究区域环境变量的特征。
Based on the zonal model of compression faults, systematic sampling has been carried out in nine examples including analysis of 36 samples.
依据压性断裂分带模式，对九个实例进行了系统取样，共分析样品36个。
METHODS The systematic sampling methods were used. 4 107 residents were investigated by questionnaires and some blood indexes were examined.
方法采用系统抽样方法，对社区4 107位居民实施问卷调查和相关指标的检测。
During the course of cluster sample verification, systematic sampling and stratified sampling "s accuracy are prior to simple random sampling" s.
群样本检验中，系统抽样群样本检验和分层随机抽样群样本检验的效果优于简单随机抽样群样本检验。
This paper deals with the estimation of population mean in systematic sampling by use of auxiliary information in order to improve the accuracy of the estimate.
讨论了等距抽样中，如何利用辅助信息改进总体平均值的估计，以达到提高估计精度之目的。
Through systematic sampling and geochemical analysis the geochemical characteristics of source rock and oil are clearly and the spatial relationship between them has been established.
通过对烃源岩和原油系统取样与地化分析，剖析了烃源岩与原油的地球化学特征，建立了源-藏空间对应关系。
Methods Systematic sampling method was used in field Oncomelania investigation, and laboratory and field simulating drowning methods were also performed to observe survival of Oncomelania.
方法应用系统抽样法进行现场查螺，现场和实验室模拟水淹实验观察钉螺存活情况。
Systematic PPS sampling design is a kind of popular design in the world that is widely applied in practice.
PPS系统抽样设计是国际上比较流行的设计，它在实践中有着广泛的应用。
Systematic community investigation into street trees in Shenyang was carried out using typical sampling method.
采取典型抽样的方法对沈阳市行道树进行了全面的群落调查。
Methods The study was performed by systematic and cluster sampling and questionnaire.
方法采用系统整群抽样的方法，以填写调查表的形式进行问卷调查。
Abstract: Structural system reliability is dealt with by Monte Carlo integration using systematic descriptive sampling is applied instead of the random sampling in the Monte Carlo procedure.
文摘：在用蒙特卡罗法计算结构系统可靠性时，运用了系统描述性抽样法。
Structural system reliability is dealt with by Monte Carlo integration using systematic descriptive sampling is applied instead of the random sampling in the Monte Carlo procedure.
在用蒙特卡罗法计算结构系统可靠性时，运用了系统描述性抽样法。
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。
To undertake a systematic random sampling, one needs to know the total number of households, the average number of children under 5 years of age in a household, and the total population.
要进行一次系统随机抽样，必需知道人群中的家庭总数，平均每户家庭5岁以下儿童的个数，以及总人口。
The effects of sampling interval. titration rate and systematic error, etc, on the accuracy of results are investigated.
考察了采样间隔、滴定速度及系统误差等参数对结果准确度的影响。
Methods 445 people living on minimum subsistence allowances in Xuzhou were selected by the method of systematic and cluster sampling with face to face inquiry and household survey.
方法采用系统和整群抽样的方法抽取徐州市低保人员445人，以面对面询问方式进行入户调查。
Methods A questionnaire survey was conducted by systematic random sampling from 732 residents of new community and 512 residents of old community with need of health education.
方法采用整群随机抽样方法，对新城区732名居民和旧城区5 12名居民采用自填式问卷的方法调查新旧城区居民的健康教育需求。
Methods A questionnaire survey was conducted by systematic random sampling from 732 residents of new community and 512 residents of old community with need of health education.
方法采用整群随机抽样方法，对新城区732名居民和旧城区5 12名居民采用自填式问卷的方法调查新旧城区居民的健康教育需求。
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