1. Special silicon screw, screw chamber, machine head, dies to protect inside vulcanize structure.
硅胶专用螺杆 、 螺筒 、 机头 、 眼模及配套防止内部硫化结构.
2. How did things go with Goodyear in the four years before he at last found the way to vulcanize rubber completely?
固特异又化了四年的时间,在这四年中,霉运一直跟着它,直到发现如何使橡胶完全硫化的方法。 |