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.
结果：以平均相对偏差和灰色绝对关联度为评价标准进行拟合精度的比较。
RESULTS: The fitting precision was compared by using mean relative error and grey absolute correlation degree as evaluation criterion.
结果：以平均相对偏差和灰色绝对关联度为评价标准进行拟合精度的比较。
RESULTS: The fitting precision was compared by using mean relative error and grey absolute correlation degree as evaluation criterion.
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