basic diagram meaning in English

基本线图
原理图

These are the two basic diagram types that are used to represent classes
这是两种基本的用于表示类的图。
Based on the hardware platform of c6x - video board - hostpc and software support of windows nt , the basic diagram of the system is proposed . in the part of application software design and implementation , how to develop it with multi - thread and realize the display quantization from 14 bits to 8bist is mainly studied in this paper
在该项目的开发过程中，上层应用程序的多线程实现和14bit到8bit的显示量化技术的开发设计是系统的重点和难点，因此本文将重点讨论c6x - pc开发中的多线程实现和显示量化技术。