The resistance of any length of a conducting wire is easily measured by finding the potential difference in volts between its ends when a known current is following.
已知导线中流过的电流，只要测出导线两端电位差的伏特值，就能很容易得出任何长度导线的电阻值。
Resistance is an important physical quantity in electricity, and in electricity experiment, wire resistance plays a most important role in the influence on result.
电阻是电学中很重要的物理量，而在电学实验中，对结果的影响，导线电阻起着至关重要的作用。
A type of metal powder-cored wire with high hardness, wear-resistance and high toughness is studied in this paper.
本文研究了一种高硬度高韧性耐磨埋弧堆焊用金属粉型药芯焊丝。
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