All 135 countries were assigned a numerical score between 0 (complete inequality) and 1 (complete equality).

所有135个国家的得分介于0与1之间，0代表完全不平等，1代表完全平等。

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In fact, any numerical discretization method has truncation error and there's no need to treat the difference equations as equality constraint.

事实上，由于任何数值离散方法均存在截断误差，将其作为等式约束是没有必要的。

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In the proposed method, virtual measurements are treated as equality constraints, which avoids the numerical ill-conditioning problem due to the disparity in weighting factors.

该方法把虚拟测量处理为等式约束，避免了由于权因子分散而导致的数值病态问题。

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