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
- hydrazine
- hydrazine fuels
- hydrazine treatment
- hydrazoate
- hydrazo compound
- hydrazoic acid
- hydrazone
- hydrazo process
- hydride
- hydride concentration in situ
- hydride formation enthalpy
- hydride generation
- hydride generationatomic absorption spectrometry
- hydride generationatomic absorption spectrometry (HG-AAS)
- hydride generationatomic fluorescence spectrometry
- hydride generationatomic fluorescence spectrometry (HG-AFS)
- hydride transfer
- hydride trap in situ
- hydride vapor phase epitaxy
- hydride vapor phase epitaxy equipment
- hydrion
- hydro-abrasion
- hydroabresone
- hydroacoustics
- hydroacoustic warfare