soldering acid

例句：

1. 1.The soldering process requires precise temperature control.
   焊接过程需要精确的温度控制。
2. 2. Soldering is a delicate process that can be easily damaged by heat.
   焊接是一种精细的过程，很容易被热损坏。
3. 3. The soldering acid was used to attach the circuit board to the motherboard.
   使用焊接酸将电路板连接到主板上。