为研究植物的蒸腾作用,小明做了如图所示的实验:�取长势及叶片数量相同的3条枝条,分别编号a、b、c。�将b枝条每片叶子的下表皮涂上凡士林,将c Template


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tomski为研究植物的蒸腾作用,小明做了如图所示的实验:�取长势及叶片数量相同的3条枝条,分别编号a、b、c。�将b枝条每片叶子的下表皮涂上凡士林,将c coloring