steel-plateCOCA²⁸⁰¹³⁶⁺⁵Economist⁵³⁵⁸¹⁺¹ 基本例句 na.钢板 This paper proposes a new method for calculating curvature radius of steel-plate spring with gradually varied rigidity in consideration of the deformation of both main spring and secondary- spring. 在考虑主、副弹簧同时变形情况下,提出了一种计算渐变弹簧曲率半径的新方法。 cnki