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2对双绞线报价是多少_其他_设计456问答
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2对双绞线报价是多少
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提问时间： 06-30 04:32
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2个答案
2对双绞线价格在50元左右。双绞线一般由两根22~26号绝缘铜导线相互缠绕而成，双绞线的名字也是由此而来。实际使用时，双绞线是由多对双绞线一起包在一个绝缘电缆套管里的。如果把一对或多对双绞线放在一个绝缘套管中便成了双绞线电缆，但日常生活中一般把双绞线电缆直接称为双绞线。
忽悠人的！传输信号的双绞线是无法达到耐火要求的！因为一旦加入耐火的云母带，虽然耐火性能提高了，但电缆的高频传输...
