其次，安稳和均匀的导电功能避免电流密度过大，使底衬过热，出现热点而过早损坏。
Secondly, stable and uniform conductive function to avoid the current density is too large, so that the bottom of the hot, hot spots and premature damage.
电铸阳极的形状和位置决定了阴极表面电流密度的分布，并最终影响金属沉积层分布的均匀性及其材料性能。
In the electroforming process, the anode electrode shape and position determine the current density distribution on the cathode and so the distribution and properties of the deposited metal.
在电铸过程中，电铸阳极的轮廓和位置决定了阴极表面电流密度的分布，并最终影响电铸层的均匀性。
During the electroforming, the current density distribution on the cathode surface is decided by the anode profile and its position, which will influence the uniformity of the deposit finally.
本发明提供一种排列有多个离子束引出孔的离子管，使得离子束电流密度变得均匀。
The invention provides an ion pipe with a plurality of ion beam extraction holes, so that the ion beam current density becomes uniform.
实验结果表明，采用网状流场电流密度分布并不均匀。
The experimental results show that the current distribution in PEMFC with metal mesh flow field is not homogeneous.
本发明提供一种离子管及离子束的引出方法，离子管排列有多个离子束引出孔，使得离子束电流密度变得均匀。
The invention provides an ion pipe and ion beam extraction method, wherein the ion pipe is arranged with a plurality of ion beam extraction holes, so that the ion beam current density becomes uniform.
为了减小器件的接触电阻和电流的非均匀性，使用了独特形状的集电极，总的电流密度也因此提高。
A special shape of collector is designed in order to reduce contact resistance and non-uniformity of the current; as a result the total current density in the device is increased.
系统分析了小尺寸半导体器件中的载流子非本地输运模型，重点研究了非均匀能带结构和异质结效应对输运电流密度的影响。
This paper analyzes the carrier non local transport model of small size semiconductor devices and studies the influences of nonsymmetrical band structure and heterogeneous effect on emphasis.
系统分析了小尺寸半导体器件中的载流子非本地输运模型，重点研究了非均匀能带结构和异质结效应对输运电流密度的影响。
This paper analyzes the carrier non local transport model of small size semiconductor devices and studies the influences of nonsymmetrical band structure and heterogeneous effect on emphasis.
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