Its economic internal rate of return is 13.41%, larger than its social discount rate 12%, therefore, the project is economically rational.

该工程的经济内部收益率为13.41%，大于社会贴现率12%，所以该工程在经济上是合理的。

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The market rate of interest can not directly substitute the social discount rate for its defect on preference revealing, interest forming, the reward of risk, etc.

而市场利率由于在偏好揭示、利率形成、风险报酬等方面的缺陷，又不能直接替代社会贴现率。

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Then according to the fact of our national economy and consulting the social discount rate in else country, a reasonable numeral 8% is suggested for the social discounting rate.

并且针对当前我国国民经济实际情况，参考国外社会折现率的测定及取值方法，建议降低我国社会折现率的取值。

youdao

Then according to the fact of our national economy and consulting the social discount rate in else country, a reasonable numeral 8% is suggested for the social discounting rate.

并且针对当前我国国民经济实际情况，参考国外社会折现率的测定及取值方法，建议降低我国社会折现率的取值。

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