A policy that state that a computer screen should be hidden when the user of the computer is away from their desk. This is usually implemented by the use of a screensaver that can only be cleared by typing a password.
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。