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
- principal set
- principal sheet
- principal solution
- principal space
- principal spectrum
- principal sphere
- principal sphere of curvature
- principal square root
- principals' research leadership
- principal state model
- principal state of polarization
- principal's teaching leadership
- principal strain
- principal subgroup
- principal subgroup series
- principal submatrix
- principal submodule
- principal subspace
- principal surface
- principal symbol
- principal symbol sequence
- principal system
- principal tangent
- principal tangent bundle
- principal telescope