seal mechanism是什么意思

用法例句

The seal procedure is achieved usually by a twisting breakable covers rolling seal mechanism, in which the key part is a rolling seal unit which rolls the screw on the aluminum bottle cover.

这里分析了扭断盖滚压封口机中滚压封口装置的工作原理 ,介绍了滚压封口机头中差动轮系有关参数的设计计算方法 ,给出了圆柱凸轮机构和径向进给机构的设计思路 ,并列举了一个设计计算实