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
- vacuum insulation pipeline
- vacuum leak detection
- vacuum level
- vacuum line technique
- vacuum load switch
- vacuum manometer
- vacuum mass spectrometer
- vacuum melting furnace
- vacuum metallizing plant
- vacuum microdischarge
- vacuum microelectronic device
- vacuum microelectronics
- vacuum mold casting
- vacuum multi-layer thermal insulation
- vacuum nano-diode
- vacuum nanoelectronics
- vacuum nano-triode
- vacuum oxygen decarburization
- vacuum packaging
- vacuum physics
- vacuum polarization
- vacuum powder thermal insulation
- vacuum preloading
- vacuum pressure die casting
- vacuum pressurizing casting