tetrad 四元组，四分体
four combination 四元组 quad 四角形区域，四元组 quadruple 四元组；四重的，四倍的 quadruplet 四元组 quaternary 四进制的，四元的；四元组 tetrad 四元组 vierbein 四元组
系统软件 语言与编译 释文 quadruple 四元组
- solar energetic particle
- solar energy
- solar energy conversion
- solar energy conversion efficiency
- solar energy conversion polymer materials
- solar energy panel
- solar energy resource observation system
- solar energy resources
- solar energy resources in China
- solar energy resources of China
- solar energy, source of
- solar energy utilization
- solar equation
- solar eruption
- solar exploration
- Solar Extreme and Far Ultraviolet Burst
- solar extreme-ultraviolet burst
- solar eyepiece
- solar facula
- solar filament
- solar filtergram
- solar fine structure telescope
- solar flare
- solar flare effect
- solar flare evolution