systematic sample meaning in English

系统抽样样品
系统的样本
系统样本

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 control group consisted of a systematic sampling of newborns delivered over the same period that were not readmitted ( n = 74 )
另外我们取同时期出生但并未再入院之新生儿为对照组，共74位。
The sample of this study came from students of six universities in hsinchu city by systematic sampling
研究结果发现：一、就公私部门整体满意度而言，公部门在电信与油品服务表现较好；而快递则是民营表现较佳。
The mechanism about seed actual reproduction and artificial restoration under disturbance was investigated by using systematic sampling in the typical area of reaumuria soongorica population at mid - young age in desert grassland region , according to two similar habitate involved five different disturbance characteristics
摘要2003年7 10月，选择黄土丘陵区荒漠草原地带两个相似生境、 5个不同干扰特徵的中幼龄红砂种群更新恢复类型区为研究物件，采用系统取样法或样行法，开展了干扰条件下的红砂种群种子更新与恢复机理的初步研究。