design principle and design method 设计原则和设计方法
design principle and method 设计思想和方案
principle and method of design 设计原理和设计方法
The principle and design method of the controller are given out in this paper.
文中给出了控制器的原理和设计方法。
The operating principle and design method of a new manual tool are introduced.
介绍一种新型手用工具的工作原理及设计方法。
The characteristics of structure, working principle and design method of the system were introduced.
阐述了系统的结构特点、工作原理和设计方法。
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