“概念设计”常见的英文表达是 conceptual design。
例如：
The conceptual design of this new product has received positive feedback from the market.（这款新产品的概念设计获得了市场的积极反馈。）
We are now in the stage of conceptual design for the upcoming urban development project.（我们目前正处于即将开展的城市发展项目的概念设计阶段。）