In mission definition stage, conceptual design phase and preliminary design phase, multidisciplinary optimization is especially significant for improving integration performance of aircraft.
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。
The design stage is the key part in the control of construction cost, but, there is always short of strength of cost control in design phase.
项目设计阶段是工程造价控制的关键阶段，但目前我们对设计阶段的造价控制的力度还是不够的。
The next stage of the project was the design phase and this involved, first of all, using their pages of research to draw a design of their hat on paper.
项目的下一个阶段是设计阶段，首先包括用他们研究的纸在纸上画出他们设计的帽子。
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