计算机电缆种类DJVVP3R金隆建设
2024-12-17
是采用大芯数的电缆引接一般不应超过20m以尽量降低地线引接线的阻抗;(2)应尽量选择较为潮湿、松软的地面开挖地线坑并且保证埋深不小于3m尽量降低地线的接触电阻;(3)还应视具体
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