systematic sampling

常見(jiàn)例句

The efficiency of regression estimate was usually higher than systematic sampling.
通常情況下，回歸估計(jì)的效率高于系統(tǒng)抽樣。
The current nutrient status of crops can now be determined through the systematic sampling of plants as appropriate times.
作物當(dāng)時(shí)的營(yíng)養(yǎng)狀況，可在適當(dāng)時(shí)期對(duì)植物的系統(tǒng)采樣進(jìn)行營(yíng)養(yǎng)分析。
METHODS The systematic sampling methods were used. 4 107 residents were investigated by questionnaires and some blood indexes were examined.
方法采用系統(tǒng)抽樣方法，對(duì)社區(qū)4 107位居民實(shí)施問(wèn)卷調(diào)查和相關(guān)指標(biāo)的檢測(cè)。