On the basis of error analysis of finite element modeling, the multi-level model updating is put forward for long-span Bridges.
在有限元模型误差来源分析的基础上，提出了大跨桥梁结构模型误差的分层次修正方法。
In the 4th chapter, we build a simple high-level workflow modeling language-M4L, which is used to describe the plat independent model based on multi meta-model.
第四章，构造一个简单的高层次描述语言m4l，使用它描述基于多元模型的平台无关的工作流模型。
The multi-level modeling of the structural optimum problems is also discussed in this thesis . The multi-level optimum method for the planar elastic structures are given.
本文开展了结构的多级优化建模的研究，探索了多级优化的求解策略，提出了二维弹性结构的多级优化方法；
The multi-port-element network method is a new unitive modeling of system-level. The fast design and simulation of MEMS devices can be achieved by 3D multi-port-elements library.
多端口组件网络方法是一种新的系统级统一建模方法，通过该方法形成的多端口三维组建库可以实现MEMS器件的快速设计与仿真。
The multi-port-element network method is a new unitive modeling of system-level. The fast design and simulation of MEMS devices can be achieved by 3D multi-port-elements library.
多端口组件网络方法是一种新的系统级统一建模方法，通过该方法形成的多端口三维组建库可以实现MEMS器件的快速设计与仿真。
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