问题
问答题 简答题
压制成型的基本原理。
答案
参考答案:
恒定速度移动活塞压制过程施加活塞压力过程见上图:
0-tf物料受热受压,tf-tc:熔化物料流动充满型腔,tc之后:物料交联反应过程
压制成型的基本原理。
参考答案:
恒定速度移动活塞压制过程施加活塞压力过程见上图:
0-tf物料受热受压,tf-tc:熔化物料流动充满型腔,tc之后:物料交联反应过程
用should/could 的适当形式填空。 |
1. If you want better grades , you ______________ watch TV too much. 2. I don't know how to get to the school. What ____________ I do? 3. -_____________ I use your phone? -Sure. 4. Bill ____________ play the guitar last year, but now he plays it very well. 5. We ____________ give the book to the library on time(按时). |