system alert meaning in English

系统警报

Central to this contingency mechanism is a three - level response system alert , serious and emergency
这机制的核心是一个三级应变系统。
The control panel applets that allow the user to change display drivers , to assign waveform sounds to system alerts , to configure the midi mapper and to calibrate joysticks . a midi mapper suports the midi patch service that allows midi files to be authored independently of end - user midi synthesizer setups
控制面板工具允许用户改变显示驱动程序、设置屏幕保护器、安装多媒体设备驱动程序、将波形声音赋给警报、配置（ midi ）映像器和校准游戏杆。