acoustic stiffness 声劲...hy-stiffness 高挺性;高挺性胶料...stiffness coefficient 刚度系数...stiffness n.坚硬,呆板,刻板强直,僵硬...element stiffness matrix 单元刚度矩阵...stiffness factor 挺性因素...flex stiffness 耐屈挠疲劳...equivalent stiffness 等效挺性...
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