例句與造句

1. In the positive - issue research of bird impact , the thesis carefully explores the basic theories , finite element numerical method and key techniques of the solution process in ls - dyna3d software system for contact - impact issue of viscoelastic bodies at large deformation . the well - chosen cases examine the accuracy of solutions in ls - dyna3d for large deformation impact issues . under the proof work , the incremental constitutive equation of bilinear and nonlinear viscoelastic materials are derived , coded and verified in ls - dyna3d
   在鳥撞正問題的研究中，本文詳細推導(dǎo)了大變形粘彈性接觸-碰撞有限元分析的基本理論、數(shù)值計算方法、求解過程、關(guān)鍵技術(shù)以及上述內(nèi)容在ls - dyna3d中的具體應(yīng)用，算例考察了ls - dyna3d在求解碰撞以及大變形問題上的計算精度，同時推導(dǎo)了線彈性材料、雙線性彈塑性材料以及非線性粘彈性材料增量法迭代方程，編制了相應(yīng)的用戶自定義材料子程序，并進行了子程序驗證。
2. It's difficult to find viscoelastic body in a sentence. 用viscoelastic body造句挺難的