An index page at the root of the site acts as the main page of the Web site, a downloads area, and an area for administrators (hereafter called admin).

把站点根目录下的索引页作为 Web 站点、下载区域以及管理员区域的主页面。

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So are the changes of the leaf area index and root number.

叶面积系数和根条数变化也是如此。

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In the model, the leaf area index (LAI), crop coefficients, and root penetration and distribution were simulated for the winter wheat and summer corn double cropping system.

模型对冬小麦—夏玉米轮作体系作物叶面积指数、作物系数、根系生长与分布进行了模拟。

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