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
- directional selection
- directional selectivity
- directional sensor network
- directional solidification
- directional supplementation and draining method
- directional survey telemetry
- directional valve
- directional variation
- directional view
- directional well tool
- direction angle
- direction bias
- direction bias sampling method
- direction coefficient
- direction cone
- direction constancy
- direction correction of Gauss projection
- direction cosine
- direction cosine algorithm
- direction curve
- direction density
- Direction des Archives de France
- Direction des constructions Aeronautiquue
- direction-determining board
- direction field