doped solder

例句：

1. 1.The engineer used a special doped solder to repair the circuit board.
   工程师使用一种特殊的掺杂焊料来修理电路板。
2. 2.The solder was so hot that it could melt metal.
   焊料太热了，可以熔化金属。
3. 3. The solder was mixed with other materials to improve its strength.
   焊料被与其他材料混合以增强其强度。