hard tin alloy

例句：

1. 1.The hard tin alloy was used to make the screws.
   这种硬质合金被用来制造螺丝。
2. 2. Hard tin alloy is a popular material for making tools.
   硬质合金是一种流行的制作工具的材料。
3. 3.The hard tin alloy was used in the construction of buildings.
   硬质合金被用于建筑的建造中。