Based on power tracing method, an economic index which evaluates the alleviative degree of overload is presented and is used to calculate the proposed lost model.

在潮流跟踪法的基础上，提出了衡量负荷削减对缓解系统过负荷支路程度的经济性指标，并利用该指标对模型进行求解。

Objective:To observe the difference of pulmonary function and bronchodilatation test of the cases with asthmatic patients in their alleviative period.

目的：观察支气管哮喘缓解期老年及青年患者的肺通气功能、支气管舒张试验有何异同。

Moreover, alleviative tax on sport investment may in turn stimulate sport investment.

对体育投资进行税收减免，可刺激对体育资本的投资。