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航天器跟踪
 航天器跟踪
space spacecraft tracking
| 测量 系统
 测量系统
avia. measurement system
el. meas.inst. measuring system
space instrumentation
tech. instrumentation system

to phrases
航天器跟踪
space spacecraft tracking
航天器跟踪
: 9 phrases in 3 subjects
Aviation1
Electronics5
Space3