SA

= Sales Aid,推销手段[工具];

= Semi-Automatic, 【修】 半自动;

= Sense Amplifier, 读出放大器;

= Structured Analysis, 结构分析;

= Summing Amplifier, 加法放大器;

= System Administrator, 系统管理程序，系统管理员;

= System Analysis, 系统分析