Delta metal

例句：

1. 1. The Delta-Aluminum alloy is widely used in the construction industry.
   这种三角洲铝合金在建筑业中被广泛使用。
2. 2.The Delta-Nickel is a popular material for jewelry making.
   三角洲镍是一种受欢迎的珠宝制作材料。
3. 3. The Delta-Titanium has excellent mechanical properties and is often used in aircraft manufacturing.
   钛合金具有出色的机械性能，常用于飞机制造。