（4）经济可行性（economic viability）：反映土地利用方式在不会导致土地退化的基础上所产生的经济效益，同时意味着土地利用活动的效益应超过土地利用成本。
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degree of economic viability 经济意义
Economic Viability Evaluation 经济可行性评价
And Economic Viability 以及经济可行性
economic viability calculation 经济可行性计算
After research and analysis we can see that this project has strong economic viability.
经过研究分析可以看出本项目在经济上具有较强的可行性。
Because neither the technology nor the economic viability of CCS have yet been proven, all coal-fired power stations are at risk of closure.
由于无论技术还是CCS的经济活力均尚未被证实，所以全部燃煤电厂都将面临倒闭的危险。
As an important step to apply the said technique, the regeneration of solvent loaded strongly influences the economic viability of the separation process.
负载溶剂的再生是络合萃取过程中的重要步骤，它直接影响分离过程的经济可行性。
Even if U.S.economic output expands in 2010 and more Americans head back to work, both critics and supporters of the president say the nation faces a more serious challenge to future economic viability: a rapidly growing deficit and a national debt estimated at more than $12 trillion.
VOA: standard.2010.01.15
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