禁用方向报警铃声，来电和半活跃状态。
Disable orientation in alarm ringing, incoming call and semi active state.
20名学生周六留校，期间突然响起辐射污染报警铃声声——这座小镇附近有一座大型化工厂，因此学校经常会组织疏散演习。
20 students during the school Saturday, suddenly sounded the alarm bell - radiation pollution near the town there is a large chemical plant, so the school often organize evacuation drills.
部分火电厂计算机控制系统中的自动报警系统在出现报警信息时发出单调的警铃或蜂鸣器声音报警，CRT画面上故障点闪亮。
The automatic alarm system in some thermal power plants will send out monotone alarm ring or buzz with the fault points blinking on CRT screen in response to the alarm information.
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