本讲义主要讲述软件过程改进SPI中的过程理念部分，从过程思维、过程环境、过程成熟度、过程规范等方面来介绍了SPI的基本知识。-the main lectures on software process improvement SPI concept of the process, from the process of thinking, the process environment, the process maturity, and so the process of introducin