理学 计算机输入输出设备 释 optical character reader,OCR 光学字符阅读器 一种通过光学扫描的方式，将字符以图像的模式输入计算机，并进行识别与处理的输入设备。
计算机硬件 输入输出设备 释文 optical character reader, OCR 光学字符阅读器
- heliosphere
- heliospheric energetic particles
- Helios Probe
- Helios satellite
- heliosta field
- heliostat
- heliotail
- heliotaxis
- heliotherapy
- heliotrope
- heliotropism
- heliotype
- helipot
- Heli Shan
- helitack
- helitron
- helium
- helium-3
- helium-3 A phase
- helium-3 B phase
- helium-3 detector
- Helium 3 proportional counting tube
- helium-4
- helium abundance
- helium atom