pre-load英p'riːl'əʊd美p'riːl'əʊdCOCA¹⁸⁵⁹³⁴BNC²³⁶²¹³⁺¹ 基本例句 预压力¹⁰⁰ The design of a new pre- tensional structure FROMOpreload nut applied in the large size of screw thread was introduced, the pre-load bolt is only beared with the pure tensile stress. 介绍了一种应用于大规格螺纹预紧的新型结构 FROMO预紧螺母的结构设计,该结构螺栓只承受纯拉应力。 cnki