For the earthquake resistant analysis of actual engineering structures, most of structural systems have the properties of non-proportional (non-classical) damping, I.
在实际工程结构的抗震研究中，一般结构体系都具有非比例阻尼特性。
The program system DDDU for actual design of engineering structures composed of bar, diaphragm, beam, shell, etc. is introduced.
本文介绍了对由杆、膜、梁、板壳单元组成的工程结构可进行实际设计的程序系统DDDU。
The program system DDDU for actual design of engineering structures composed of bar, diaphragm, beam, shell, etc. is introduced.
本文介绍了对由杆、膜、梁、板壳单元组成的工程结构可进行实际设计的程序系统DDDU。
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