cobalt-base alloys

例句：

1. 1. The new car is made from a cobalt-base alloy that provides excellent fuel efficiency.
   这款新车是由一种钴基合金制成的，具有出色的燃油效率。
2. 2. Cobalt-base alloys are often used in the production of high-performance engines due to their strength and durability.
   由于其强度和耐用性，钴基合金常用于高性能发动机的生产。
3. 3. In the automotive industry, cobalt-base alloys are commonly used in the manufacturing ofbrake pads and rotors.
   在汽车制造业中，钴基合金常用于制造刹车片和轮圈。