及物动词

1. 焊;焊接;焊合
If you solder two pieces of metal together, you join them by melting a small piece of soft metal and putting it between them so that it holds them together after it has cooled.

2. 焊料;焊锡
Solder is the soft metal used for soldering.

1. an alloy (usually of lead and tin) used when melted to join two metal surfaces