发布时间:2025-02-01 02:53:38
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。
我家客厅和别人家厨房共用一面墙而且还不隔音万恶的是别人家切菜做饭就像在我家一样怎么才隔音呢
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