如果人体组织和电极之间的有效接触面积保持不变，那么高频电流强度扩大一倍将会使电流密度增大一倍，并产生四倍的热量。
Doubling hf-current results in a doubling of current density and a fourfold heat provided that the area of effective contact between the tissue ang the electrode remains constant.
板线匹配更合理。先进的板匹配，有效地提高了电场平均电压和板电晕电流密度，收尘效率更高。
Reasonable matching of wafer and wire: the advanced matching of wafer improves average voltage in electric field and current density of wafer corona, which the dedusting efficiency is higher.
针对电信号的有效传输受外界环境引起自身参数变化的问题，提出了一种基于有限元方法求取传输参数的等效电流密度法。
A novel method named equivalent current density based on finite element method was developed for parametric variation problem of signal transmission caused by the external environment.
相应地，如果将有效的电极接触面积加大一倍，电流密度将减少一半，热量则减少75%。
This results in a fourfold increase of heat Correspondingly, heat drops by 75% if current density is reduced by half, e. g. by doubling the effective electrode contact area.
有限元法已被证明是计算阴极保护场中电位、电流密度分布的有效方法。
The 2-d finite element method was an effective method to calculate the potential and current density distribution of cathodic protection fields.
锌电解过程中，在不同电流密度条件下合理控制电解液的酸锌比能有效地降低能耗。
The energy consumption can be reduced if ratio of acid to zinc is controlled reasonably in zinc electrolysis process under the condition of different current density.
锌电解过程中，在不同电流密度条件下合理控制电解液的酸锌比能有效地降低能耗。
The energy consumption can be reduced if ratio of acid to zinc is controlled reasonably in zinc electrolysis process under the condition of different current density.
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