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光学系统
guāngxué xìtǒng
stresses
tech.
оптическая система
;
схема оптики
光学系统:
80 phrases
in 10 subjects
Cinema equipment
1
Electronics
3
General
21
Information technology
2
Metallurgy
1
Military
5
Missiles
1
Nanotechnology
1
Radio
1
Technology
44
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