细导线的电阻比粗导线的电阻大，它阻碍电流通过，因此变得很热。
A thin wire has a higher resistance than a thick one. It tries to stop the flow of current. Then it gets very hot.
这些通常是由用金属线串起来的小块亮印花金属组成，然后固定在一根较粗的基础导线上。
Often these consisted of small pieces of brightly printed metal strung by wire to a thicker base wire.
这样，可以检核闭合导线测量的粗差和提高它的精度。
Like this, it can check the mistake and increase its precision of closed traverse's measure.
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