- 1. 植物叶片的滞尘量、重金属含量以及s含量随着离公路距离的增加而减少。
- The content of dust absorption, heavy metal and s of vegetation has reduced as the increase of the distance from the expressway.
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- 2. 滞尘量、重金属含量以及s含量随季节变化规律为：冬季、秋季含量较高，春季和夏季较低。
- The change law of absorbing dust, heavy metal and s capability of trees up to season is: high in Autumn and Winter, down in Summer and Spring.
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- 3. 滞尘量、重金属含量以及s含量随季节变化规律为：冬季、秋季含量较高，春季和夏季较低。
- The change law of absorbing dust, heavy metal and s capability of trees up to season is: high in Autumn and Winter, down in Summer and Spring.
youdao
