PA

= Paper Advance,进纸，走纸;

= Parametric Amplifier, 参量放大器;

= Physical Address, 实际地址，物理地址;

= PicoAmpere, 微微安(培);

= Power Amplifier, 功(率)放(大器);

= Predictive Analyzer, 谓词分析程序;

= Process Automation, (生产)过程自动化