声光

• Acoustic , optical alarm signals and identifying indications in ships
  船舶声光报警信号和识别标志
• Thermocouple e , j , k , b , r , s , t
  B大屏幕闪光指示，声光报警
• Time delay relay miniature elect .
  微电脑声光时控制开
• A centralized intelligent aural - visual alarm system controlled by 80c196kc
  单片机的集中智能声光告警系统
• Alarm method sound and light alarm
  报警方式：声光报警
• Ergonomics - system of danger and non - danger signals with sound and light
  人类工效学险情和非险情声光信号体系
• Nonlinear acoustic - optical effect from liquid surface waves at low - frequency
  液体表面低频声波的非线性声光效应
• Study of acousto - optic effect
  声光效应实验研究
• The wireless against snatching
  无线声光防抢器
• Audio and video alarm system
  声光警报系统