Considering the mixed traffic running characteristic on signalized intersection, this paper sets forth optimized cycle time, green ratio and green light interval model.

在充分考虑信号交叉口混合交通特性的基础上，提出了信号交叉口周期时长、绿信比、绿灯时间间隔优化模型。

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There is also research indicating that drinking green tea lowers total cholesterol levels, as well as improving the ratio of good (HDL) cholesterol to bad (LDL) cholesterol.

同样有研究表明，饮用绿茶能降低总胆固醇水平和提高有益胆固醇（高密度脂蛋白）与有害胆固醇（低密度脂蛋白）的比率。

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This new metric, the green plot ratio (GPR), is based on a common biological parameter called the leaf area index (LAI), which is defined as the single-side leaf area per unit ground area.

这个新指标——绿色容积率(GPR)是以一个通常被称作叶面积指数(LAI)的生物参数作为基础，该参数被定义为每单位地块面积上的单面叶面积总和。

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