发布时间:2025-02-01 03:02:37
导线截面积s=I/a。I表示电流安,a表示每平方安全承载电流安。铜线a取每平方8安,铝线4安。比如100安的电流,铜线s=100÷8=12.5平方,铝线s=100÷4=25平方。
请问家里装修窗帘是深蓝色的茶几和电视柜是棕色的配个什么颜色的沙发好
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