titanium copper

例句：

1. 1. Titanium is a very strong and lightweight metal.
   钛是一种非常强且重量轻的金属。
2. 2. The titanium alloy used in the car is extremely durable.
   用于汽车的钛合金极其耐用。
3. 3.Titanium is often used in medical implants due to its high strength-to-weight ratio.
   由于其高强度与低重量比，钛常用于医疗植入物。
4. 1. Copper is widely used in electrical wiring because it conducts electricity well.
   铜因其良好的导电性而被广泛用于电线中。
5. 2. Copper is also used in making coins, as it is soft enough to be worked into intricate designs.
   铜也被用来制作硬币，因为它足够柔软可以加工成复杂的图案。
6. 3. Copper is an important material for construction, as it is strong and can withstand heavy loads.
   铜是建筑的重要材料，因为它既坚固又能承受重负载。