cored solder

例句：

1. 1. The engineer used a cored solder to connect the circuit board to the motherboard.
   工程师使用一种核心焊料将电路板连接到主板上。
2. 2. The cored solder was applied evenly across the joint to ensure a strong bond.
   核心焊料被均匀地涂在接头上，以确保牢固的连接。
3. 3. The cored solder was resistant to heat and moisture, making it suitable for outdoor applications.
   核心焊料耐高温和潮湿，适用于户外应用。