判定一个地区自然资源比较优势的标准不是资源的绝对或相对拥有量，而是资源经济价值的大小。
It is not absolute or relative possessing of resource but its economic value that determines the standard of natural resource's relative advantage in a certain region.
过滤过程则将新进来的邮件分别与四个小类的类中心向量进行相似度比较，最终来判定所属类别。
When filtering, the new E-mail was compared with four center vectors respectively to decide which class it belonged to.
数值模拟的结果表明：用柔度曲率幅值突变系数法可以对钢桁架结构单个或多个结构同时出现的情况进行比较准确的判定。
The results of the simulation indicate that using the method of the sudden change coefficient of flexibility curvature, the single or multi damage of the steel truss were tested more precisely.
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