The design object is changed from the technical system to the human-machine system (human-technicalsubsystem-technical process-operation environment system).
把设计对象由技术系统上升到人机系统，即人—技术子系统—技术过程—作业环境系统。
2
The paper introduced the technical parameters, basic structure and work cycle of each subsystem of air compressor with the aim to improve the operation level of workers.
文中介绍了空压机的有关技术参数和基本结构、各子系统工作循环，以便提高工作人员对空压机的操作水平。
3
The functions and the technical characteristics of the 11 main models in conductivity meter PC software subsystem were introduced in details.