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汉语拼音：tóng sī

通常是由热轧铜棒不退火（但尺寸较小的丝可能要求中间退火）拉制而成的丝。

1. 用铜拉制成的线状成品。电机线圈、工业用筛等多用铜丝制成。

   茅盾 《我走过的道路·小学生时代》：“用两根不太粗也不太细的铜丝相绞，使两股成为一股。”

2. 用铜丝绞制的缆绳。

   宋 梅尧臣 《依韵和达观师山中见寄》：“铜丝紧转轆轤响，络纬秋老号西风。”

• But only a diameter of less than half a millimeter of fiber optic cable to be made of thick copper wire cable than carry more information.

  但是只一根直径小于半毫米的光纤电缆就可以比铜丝制成的粗电缆承载更多的信息。

• The stress-strain curves of a copper wire and a structure adhesive film tested with the system are given.

  最后采用该系统对金属铜丝和一种结构胶粘剂薄膜进行了拉伸测试。

• When the ends of a copper wire are joined to a device called an electric cell a steady stream of electricity flows through the wire.

  当把一根铜丝的两端连接到一种叫做电池的电器上时，就会有稳定的电流流过该铜丝。

• We find the copper wire you supplied is not to the exact specifications of your sample.

  我们发现你方供应的铜丝不是你方样品的准确规格

• Even though the copper wire looks quite motionless to your eye, there is a great deal of activity going on inside it.

  虽然铜丝看起来完全静止不动，但在它内部却有大量活动正在进行。

• Conductor material: no oxygen copper wire fine twisted into a bundle.

  导体材料：无氧铜丝精绞成束。

• Conductor material: many fine twisted into a bundle of bare copper wire.

  导体材料：多股精绞成束裸铜丝。

• Brush silk material with gold, fiber hairy, bristles, steel wire, copper wire, abrasive silk etc, are a different range of use.

  刷丝材料有尼龙丝，纤维毛，猪鬃，钢丝，铜丝，磨料丝等，分别有不同的使用范围。

• Do not wear casing leak phenomenon, copper wire can't fork out ground casing.

  不可有漏穿套管现象，铜丝不能叉出地线套管。