mould vulcanization

例句：

1. 1. The mould is designed to fit perfectly into the mold cavity.
   模具设计得能完美地适配到模具腔内。
2. 2. Vulcanization is a chemical process that transforms raw materials into finished products.
   硫化是一种化学工艺，将原材料转化为成品。
3. 3. During the vulcanization process, the rubber becomes soft and pliable.
   在硫化过程中，橡胶变得柔软且有弹性。