电晕效应是特高压输电线路设计中所考虑的关键题目之一，温度、湿度对直流导线电晕影响规律是特高压直流输电线路设计的依据。
Corona effect is one of the key issues of designing UHV transmission lines, in which the influence of temperature and humidity on DC conductor corona should be considered.
在直流输电线路工程设计中，如果按我国现行标准规定的经济电流密度选择导线截面，将导致截面偏小，损耗增大。
In DC transmission line construction design, current national standard of economical current density will under predictcd conductor section, resulting in large loss.
这是由于直流电在导线内总是沿着一个方向流动。
This is because the direct current flows in a wire always in one direction.
高压直流输电系统架空线路只需正负两 极导线，可实现大功率、低损耗、长远距离电力的直接输送；
The overhead line of HVDC power transmission system needs positive and negative leads only, allowing for high power, low loss and long distance power transmission;
直流车辆用文中所述的蓄能器能在显著降低功率消耗的同时，又在节能方面迈出了重要一步，而且车辆可在局部无接触导线区运行。
The proposed energy storage on board of a DC-Railway vehicle leads to a big step in the reduction of consumed energy, whiledrastically reducing the peak power demand at the same time.
受磁场对载流导线有力的作用和牛顿第三定律的启发，希望制造一种新型的直流电动机。然而失败了。
Inspired by the force action caused by magnetic field to current carrying conductor and Newton's third law, we tried to make a new type of DC motor, yet we failed.
受磁场对载流导线有力的作用和牛顿第三定律的启发，希望制造一种新型的直流电动机。然而失败了。
Inspired by the force action caused by magnetic field to current carrying conductor and Newton's third law, we tried to make a new type of DC motor, yet we failed.
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