Stiffness: It is a measure of the bending strength of paper and board.
挺度：挺度是衡量纸和纸板耐弯曲的强度性能。
The bending process design, bending process parameters' calculation and selection, and bending die structure design for the forming of fixed board were all introduced in this paper.
介绍了弯曲件的弯曲成形工艺方案、工艺参数的计算与选取以及弯曲模具结构与设计，得出采用多道弯曲成形工序是合理的。
Cantilever crane beam flange web in bending due to board edge are mutually embedded, a restriction on the cross section deformation.
悬臂吊梁的翼缘板和腹板在弯曲时因板边互相嵌固，对截面变形有约束作用。
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