理学 计算机输入输出设备 释 optical mark reader; OMR 光学标记阅读器 是一种标记输入设备。该设备用光学扫描的方式识别并获取按一定格式印刷或书写的标记，并转化为计算机系统能够接收识别的数字文件。简称光标阅读器。
计算机硬件 输入输出设备 释文 optical mark reader, OMR 光学标记阅读器 计算机硬件 输入输出设备 释文 optical mark reader, OMR 光学标记阅读器
- signal-to-noise ratio
- signal-to-noise ratio，SNR
- signal transduction
- signal transduction in plants
- signal transfer equalization
- signal transform
- signal transmission
- signal transmission failure
- signal velocity
- signal voltage drop
- signal waveform estimation
- signal with finite energy
- signal with finite power
- signalyzer
- signatron
- signature
- signature analyzer
- signature-based detection
- signature block
- signature certificate
- signature criterion
- signature file
- signature inversion
- signature of a group
- signature of a knot