lead-free solder material

• 无铅钎料

lead-free solder material的用法和样例：

例句

1. Some key problems in developing lead-free solder were analyzed and some suggestions of solving the problems were put forward.
   分析了无铅钎料研究必须解决的几个关键问题，并提出了解决这些问题的思路和建议。