multiple pressing technique是什么意思

用法例句

The basic principle, optimum design method, fabrication process and duplicating technology of binary optics are introduced in this paper.

介绍了二元光学的基本原理、优化设计方法、加工工艺、复制工艺以及一些应用实例，最后就二元光学的应用前景做了初步探讨。

The die design critical points and advanced pressing process of board spring on rotating shaft steamer dynamotor.

介绍了汽轮发电机转轴上的板弹簧模具设计要点以及先进的压制工艺。