On the support of GIS technology and through the method of net sampling, the data of basic environmental elements and biomass per acreage of sampling sites were obtained.

以环境要素数据为自变量，样点单位面积生物量为因变量，采用二元四次多项式建立趋势方程并生成立体模型。

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NET memory Allocation: USES the sampling profiling method to analyze memory used by the.net Framework itself.

NET内存分配：使用采样分析方法来分析。NET Framework自身的内存使用状况。

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Because the soil and water conservation factor was not concluded in net method, the soil erosion modulus calculated with net method was higher than that calculated with sampling survey method.

由于网格法没有考虑水土保持措施因子，调查得到的土壤侵蚀量结果比采用抽样调查法得到的结果偏大。

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For example, the payroll survey finds the economy has lost 1.1 million jobs since George Bush took office, while the household sampling finds the economy has created a net 1.9 million new jobs.

FORBES: Fact and Comment