直流电缆 meaning in English

direct current cable

But even at this height an overhead dc line will beat an ac line at distances more than 1 , 000km ( 600 miles ) , while ground - level dc will beat ac at distances as short as 30km
但即使是这样的高度，高架直流电缆也比交流电缆的最大传输距离远1 , 000千米（ 600英里）以上，地面直流电缆比交流电缆传输距离远30千米。
With an introduction of cable laying and the environment for the cable , this paper classifies the cable faults recorded on the historic statistics , holds that the armored cable and the on - line detection method shall be adopted , professional evaluation system also be established for the improvement of cable operation
介绍了上海地铁直流电缆的敷设方式和环境，在统计历史故障的基础上对直流电缆故障进行了分类，提出了在新线建设和改造项目中，尽可能采用带铠装的软电缆；通过在线检测手段，建立专家评估系统，评定绝缘的优劣并预警其劣化的趋势；改进直流电缆敷设质量，改善其运行环境等措施和建议。