“传递电流”功能的价值,是以金属(导体)的导电率与其购买费用之间的关系来确定的。大家知道,导电率是随几何尺寸(长度和截面积)变化的,而成本通常又取决于重量。因此,可以将成本转换为以单位体积所花费用来表示,即可得到金属(导体)的导电价值,即:导电价值=导电率/比重·成本。表1中列出了常用几种普通金属(导体)的导电价值。 The value of the “transmitting current” function is determined by the relationship between the conductivity of the metal (conductor) and its purchase cost. As we all know, the conductivity varies with the geometry (length and cross-sectional area), and the cost usually depends on the weight. Therefore, the cost can be converted to the unit of volume used to represent, you can get the conductivity of the metal (conductor), namely: conductive value = conductivity / specific gravity, cost. Table 1 lists the conductive values ​​of several common metals (conductors).