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simple systematic sampling
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simple systematic sampling
Encyclopedia
农学
简单顺序抽样法
释
simple systematic sampling
简单顺序抽样法
将总体中各单元按一定标志或次序排列,然后按相等的距离或间隔抽取样本单元的方法。又称系统抽样、机械抽样、等距抽样。
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ecological countryside/ecological village/ecovillage
ecological crisis
ecological culture
ecological culture county
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ecological damage assessment technology of oil spill
ecological damage prevention and control act
ecological defence
ecological deficit
ecological degradation
ecological degradation of the waterbody
ecological design
ecological disaster
ecological disaster risk
ecological disasters for Fisheries
ecological displacement
ecological distribution
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ecological diversity of water ecosystem
ecological dredging
ecological economics
ecological economics of foresty
ecological effect of marine pollutants
ecological effects of air pollution
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更新时间:2025/10/13 17:16:17