文学 灰色成分替代 释 gray component replacement；GCR 灰色成分替代 在彩色图像复制中，凡是用三原色油墨叠印或混合而构成的复色区的非彩色值，可采用三原色中最弱色相等的黑色油墨来替代，并获得相同的视觉效果。
GCR 全称：Galactic cosmic rays。银河系宇宙线
计算机硬件 存储设备 释文 group coded recording, GCR 成组编码记录
- principal normal
- principal normal complex
- principal normal form
- principal normal line
- principal normal plane
- principal normal section
- principal normal surface
- principal normal vector
- principal number
- principal nutation
- principal object
- principal offender
- principal of land laws
- principal of least dissipation of energy
- principal open set
- principal optical axis
- principal orbit
- principal orbit type
- principal order
- principal order module
- principal parabola
- principal parameter
- principal part
- principal partition
- principal part of an infinitesimal