In the F-H experiment, the temperature affects mercury's saturated density, so it's natural to affect the energy exchange between mercury and electron.
在夫兰克-赫兹实验中，温度影响着汞原子的饱和密度，当然就影响了汞原子与电子之间的能量交换。
The proton exchange membrane fuel cell (PEMFC) is one of the most promising power sources for future electric vehicles due to it's high power density and energy conversion efficient.
质子交换膜燃料电池（PEMFC）具有较高的功率密度和能量转化效率，最有可能成为电动汽车的动力源。
The edge density, shape index and fractal dimension index is high, the patch shape is complicated, which shows that the material and the energy exchange can be carried on preferably.
边缘密度、形状指数和分维数比较大，形状复杂，可以和较多的异质性斑块相连接，能较好地进行物质和能量的交换。
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