工学 产品设计理论与方法研究的历史 释 computer aided design; CAD 计算机辅助机械设计 设计者以计算机作为工具，以工程应用软件作为支撑平台，运用自身的知识和经验，对产品或工程进行方案构思、总体设计、工程分析、图形编辑和技术文档整理等设计活动的总称。
计算机应用 计算机辅助设计与图形学 释文 computer-aided mechanical design 计算机辅助机械设计
- Three Novels by Yang
- three-old-men comic talk
- three olds renewal of Guangzhou
- three on three basketball
- three-opening dramatic stage in Yu County
- Three Opera Sages
- Three Pagodas of Chongsheng Temple in Dali
- Three Parallel Rivers of Yunnan Protected Areas World Natural Heritage
- Three Parallel Rivers Scenic and Historic Area
- three-parameter
- three-parameter family
- three parameter logistic model
- three-parameter logistic model
- Three Partitions of Poland
- three parts of the body(the upper ,middle,lower)
- Three Passes
- Three Passes Banquet
- three perching egrets
- three-person keelboat of Summer Paralympics
- three-phase
- three phase AC power transmission
- three-phase A.C.voltage regulating circuit
- three-phase a.c. voltage source
- three-phase alternating current
- three-phase boundary