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信号组
avia. marking team (空降分队,用来建立导航设施或其他电子装置)
space signal set
信号组
: 65 phrases in 19 subjects
Advertising1
Air defense1
Automobiles1
Aviation7
Communications1
Electric machinery1
Electronics9
General1
Genetics1
Geophysics2
Information technology3
Nuclear and fusion power1
Rail transport1
Scuba diving1
Securities2
Space7
Submarines1
Technology19
Telecommunications5