solid copper wire

例句：

1. 1. The electrical engineer used a solid copper wire to connect the circuit.
   电气工程师使用一根固体铜线来连接电路。
2. 2.The old house was rewired with solid copper wire for better energy efficiency.
   这所老房子被重新布线，使用了固体铜线以提高能源效率。
3. 3.The new computer has a solid copper wire that provides excellent signal transmission.
   新电脑的线路采用了固体铜线，信号传输效果极佳。