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1x2x1.5表示电缆为1对数，每对由两根标称截面积1.5 平方毫米 的绝缘线芯对绞。 为了便于理解，下图就是DJYPVP型计算机电缆的示意图，规格就是：4x2x（导体的截面积），就是4对数的电缆。

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2022年3月22日 · 反过来看比较好理解：芯线的横截面积是1.5平方毫米，2根芯线绞合为1对，电缆里有1对，只有1对的话，一般直接写2*1.5就好了. 3*1.5 代表这根电缆中有3根1.5mm芯的电缆1*2.5代表这根电缆中1根2.5mm芯的电缆. 前面的符号了么 你没发对·K开头的是控制电缆，比如 KVV -4*1.5 Y开头的是动力电缆 还有一种情况 2*（1*25）这的意思就是单芯25的电缆，两根并联成一根用 。 你这种情况也有，在cad里面这是表示1根电缆是2*1.5，也就是说不是单线。

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2*2*1.5具体指：2组，每组2芯（共4芯）每芯横截面积是1.5 平方毫米。 电缆1*2*1.5啥意思前面应该还有标号，记住那是代表功能和绝缘的材料等。 2*2*1.5具体指：2组，每组2芯（共4芯）每芯横截面积是1.5平方毫米。

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Graph the parabola using its properties and the selected points. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.