在飞机设计各阶段中，任务定义阶段、概念设计阶段和初步设计阶段的综合优化设计对提高飞机整体性能具有极其重要的意义。
In mission definition stage, conceptual design phase and preliminary design phase, multidisciplinary optimization is especially significant for improving integration performance of aircraft.
设计阶段涵盖了概念设计、方案设计、初步设计等，对于特殊的项目还包括现场技术配合等全面的专业服务。
Design covers conceptual design, design, preliminary design, for special projects include on-site technology with comprehensive professional services and other.
论文的研究对自锚式桥梁的概念设计及初步设计具有一定的参考意义。
The research of the thesis gives some contributions for the conception design and primary design of the self-anchored suspension bridge.
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