bending die短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 弯曲模 This paper introduce the design and application of the structures and parameters of the simple revolving bending die. 介绍了其模具结构和参数的设计与应用。 cnki This paper introduce the structures and application of the revolving bending die. 本文介绍了其模具结构与应用实例。 cnki