preformed polymer

例句：

1. 1. The new material is made from a preformed polymer that can be easily molded into various shapes.
   这种新材料是由一种预成型聚合物制成的，可以很容易地塑形成各种形状。
2. 2.The preformed polymer was used to make the prototype of the new car.
   预成型聚合物被用来制作新车的原型。
3. 3.The preformed polymer has excellent thermal and mechanical properties, making it suitable for use in high-performance applications.
   预成型聚合物具有出色的热和机械性能，使其适用于高性能应用。