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to phrases
天文观测
tiānwén guāncè
oil
astronomical sight
space
astronomical observation
;
astro-observation
;
celestial observation
tech.
astronomic measurement
;
astronomical measurement
;
astronomic observation
;
astronomic sight
天文观测:
50 phrases
in 8 subjects
Aviation
5
Electronics
3
General
2
Geophysics
1
Military
1
Space
24
Technology
13
United States
1
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