To make its artificial leaf, the MIT team spread its catalysts on opposite sides of a silicon wafer.
此研究团队将催化剂涂在了硅片的正反两面，使它像一片人工叶子。
2
With CO2 concentration enrichment, the leaf stoma density becomes small for C3 crops, but it shows the opposite tendency for C4 crops (maize).
随着CO2浓度升高，C3作物叶片气孔密度变小，C4作物（玉米）呈相反趋势；
3
The relations between differentation and root growth, among the growth of different order lateral roots and between the growth of shoot-leaf and root were high unity of opposite.