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spacecraft tracking
 spacecraft tracking
space 航天器跟踪
| and
 AND
el. ; 逻辑电路"与"
 and
gen. ; ; ; ;
busin. 以及;
| data network
 data network
work.fl. 数据网络

to phrases
spacecraft tracking
space 航天器跟踪
spacecraft tracking and data network
: 7 phrases in 4 subjects
Air defense1
Electronics3
Space2
Technology1