1·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。
2·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。
3·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。
4·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。
5·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。
6·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。
7·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。
8·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。
9·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。
10·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。