GB/T 31489.2-2020额定电压500kV及以下直流输电用挤包绝缘电力电缆系统第2部分:直流陆地电缆标准
英文:D.C. extruded cable systems for power transmission at a rated voltage up to and including 500kV—Part 2: D.C. land cab...
英文:D.C. extruded cable systems for power transmission at a rated voltage up to and including 500kV—Part 2: D.C. land cab...