A system or process being controlled in which the controlled variable is measured and the result of this measurement is used to manipulate one of the process variables, such as steam flow to a heat exchanger, for example.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。