The PID controller is a universal tool for the control engineer, applicable to a wide variety of processes.
PID控制器是控制工程师的通用工具，适用于各种各样的过程。
A story doesn’t have to be loud to be heard.
Space and light and order. Those are the things that men need just as much as they need bread or a place to sleep.
写作就是呼吸，呼吸就是生活。
艺术不是对现实的逃避，而是对现实的更深层次的参与。
The only person you should try to be better than is the person you were yesterday.
根据问题出现的背景，代数实部可以接受从负无穷到正无穷的所有数值。