By supposing the displacementshape functions and applying the Galerkin method, the dynamical equations with respect to time were gained.
通过位移形函数假设，采用伽辽金积分方法得到了时间变率的动力学控制方程；
2
Sail area is usually planned by boat designers based on the boat's size, displacement (weight), and hull shape and configuration - not the number of masts or sails.
帆面积通常是由帆船设计者根据帆船的尺寸，重量，船底形状和配置来确定的，而非根据桅杆或船帆的数量。
3
This thesis deduces computational formulations of displacement sensitivity and stress sensitivity in structural shape optimization considering geometric nonlinear element.