To obtain the phase of line is important in the design of power electronic equipments.
准确获得电网电压的相位角，在电力电子装置设计中有重要的意义。
Line No. 1 (Huang Daoduan) also entered the construction phase of the main station.
1号线(黄岛段)也全面进入车站主体施工阶段。
Construction phase of Gold Line in San Gabriel Valley from down to L. A. Ontario airport.
施工阶段的黄金线在圣盖博谷，从下到洛杉矶安大略机场。
The effect of open-phase running of transmission line on distance criterion is analyzed.
主要分析了电力系统输电线路非全相运行对线路保护装置中距离判据的影响。
The effect of open-phase running of transmission line on distance criterion is analyzed.
主要分析了电力系统输电线路非全相运行对线路保护装置中距离判据的影响。
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