solder powder

例句：

1. 1. The solder powder was used to attach the circuit boards together.
   焊料粉末用于将电路板连接在一起。
2. 2.The solder powder was applied evenly across the joints before they were heated.
   焊料粉末在焊接前均匀涂抹在接合处，然后加热。
3. 3. The solder powder reacted quickly with the copper wire, forming a strong bond.
   焊料粉末与铜线迅速反应，形成牢固的连接。