This text will introduce three-dimensional modelling techniques and CBR used in underframe design field, and the development of a set of three-dimensional intelligent underframe design system.

• 本文将三维造型技术与实例推理技术结合运用到机房底架设计领域，提出基于实例推理的底架设计流程，开发了一套底架三维智能设计系统。