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标称截面mm2
Nominal cross-sectional area of conductor mm2
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20℃时导体电阻不大于(Ω/km)
Max.d.cresistance of conductor Ω/km at 20℃ not more than
|
标称截面mm2
Nominal cross-sectional area of conductor mm2
|
20℃时导体电阻不大于(Ω/km)
Max.d.cresistance of conductor Ω/km at 20℃ not more than
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