对称体 meaning in Chinese

antitrope
symmetric body
symmetrical body

According to the symmetrical specialty of the tow structures , the integrated dynamic information of structure can be mapped from one symmetrical face of the structure , and the mode shape is mainly datum to be mapped
然后，根据两实例的结构特点，以对称体的特有性质为依据，使用了以一个对称面为基础，将其振型映射到另一面的方法，获得了结构较完整的动态信息。
By the theory of z transformation of linear system and matrix , we proved the validation of the averaging filter method using in ietd to cancel oscillation . then we illustrate the disadvantage of using averaging filter and give a new averaging filter that we note as phase - modified averaging filter , which can reduce the disadvantage . at the end of this chapter , we study the potent of reducing the time - cost of ietd by taking account the short duration characteristics of incident impulse
本文第二章，首先简述了时域积分方程递推解法( ietd ) ，然后推导了应用于旋转对称体的，能够减少计算量的ietd方法，重点阐述并应用线性系统的z变换理论和矩阵理论研究了ietd方法中遇到的稳定性问题，从理论上证明了平滑滤波技术的有效性，指出了它对计算精度的影响，并在分析的基础上提出了新的相位修正平滑滤波方法。