说明：  本章首先介绍了TEQC软件的基本功能，包括格式转换、数据编辑、质量检查、单点定位。接着列出了一些TEQC软件的常用命令，并作了详细的注释
(This chapter introduces the basic functions of TEQC software, including format conversion, data editing, quality control, single point positioning. Then a list of some common commands TEQC software, and made detailed notes)