extra-super duralumin

例句：

1. 1.The extra-super duralumin is the perfect material for high-performance applications.
   超级合金是高性能应用的理想材料。
2. 2. The engineer used the extra-super duralumin to create a stronger and more durable bridge.
   工程师使用超级合金制造了一座更坚固耐用的桥梁。
3. 3. The extra-super duralumin was tested under extreme conditions, proving its durability in harsh environments.
   超级合金在极端条件下进行了测试，证明了其恶劣环境下的耐用性。