The scientific sampling size and suitable sampling number under different densities on the two pests were consequently determined.
据此，确定了两种害虫的科学抽样方式和不同密度下的合理抽样数量。
It's not a scientific survey, since those polled are a self-selected sampling and tend to feel strongly about certain sites, both pro and con.
这并不是一个科学调查，而是基于自由选择投票并且考虑到所选网站的优缺点产生的。
CTR applies the scientific monitoring method combining random sampling and whole-process video recording to ensure impartiality of monitoring process and completeness of sampling.
CTR采用单点随机抽样、全程录像监控的科学监播方式，在保证监播实施过程公正性的同时，也确保了监播采样的完整性。
These results provide a scientific basis for accurate sampling and effective management of this pest.
研究结果为田间灰飞虱的准确抽样调查和有效防治提供了科学依据。
Spatial scale is forefront in soil-scientific research, so the analysis of macropore reasonable sampling size becomes significant which is in case of taking account of spatial variability.
土壤特性的空间尺度问题是当今土壤科学研究的前沿，在进行土壤空间变异研究中，大孔隙的合理取样尺度分析对大孔隙流研究具有十分重要意义。
Spatial scale is forefront in soil-scientific research, so the analysis of macropore reasonable sampling size becomes significant which is in case of taking account of spatial variability.
土壤特性的空间尺度问题是当今土壤科学研究的前沿，在进行土壤空间变异研究中，大孔隙的合理取样尺度分析对大孔隙流研究具有十分重要意义。
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