其中，传统的沙化信息提取技术包括监督与非监督分类法及目视解译法；
The former incorporate supervision and non-supervision classification methods and visual interpretation methods;
由于黄土高原地区地形复杂，在坡耕地遥感调查中单纯采用监督分类法很难获得理想的精度。
The classification accuracy is unsatisfactory in the complicated terrain area of the Loess Plateau when the single supervised classification is used in the remote sensing investigation of slope field.
通过比较分析，确定了利用阈值法分类时的最佳阈值，并且认为阈值法比监督分类法具有更好的分类精度。
According to comparison, the best threshold was confirmed, so as to the fact that the ratio techniques has a better accuracy than supervised method when doing rice mapping.
当国会在1994年10月25日颁布《食品强化剂及健康教育法案》时，创造了一个新的物质分类法以及一套新的监督管理方案。
When Congress enacted the Dietary Supplement and Health Education act (DSHEA) on October 25, 1994, it created a new category of substances and new regulatory scheme.
当国会在1994年10月25日颁布《食品强化剂及健康教育法案》时，创造了一个新的物质分类法以及一套新的监督管理方案。
When Congress enacted the Dietary Supplement and Health Education act (DSHEA) on October 25, 1994, it created a new category of substances and new regulatory scheme.
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