The damage size increases with increase of charging current density, but not so apparent at higher current density.
随电流密度增加，氢损伤尺寸增大，但当电流密度较大时，这种增大不明显。
Current density: unit under the plating area under current, usually the higher current density film thickness is thicker, but is high coating will scorched thick dry.
电流密度：单位电镀面积下所承受的电流，通常电流密度越高膜厚越厚，但是过高时镀层会烧焦粗燥。
The measure result showed the higher current density and stability of the mesoporous Pt nanowires than the solid nanowires, which had prospect in the application of DMFC.
电化学性质测试表明，介孔pt纳米线电极比普通实心电极有着更大的催化电流密度和稳定性，在直接甲醇燃料电池应用方面具有前景价值。
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