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光学仪器 guāngxué yíqì
busin. optical instruments
interntl.trade. photographic
met. optical instrument
tech. optic apparatus; optical apparatus; optic instrument
光学仪器: 75 phrases in 14 subjects
Agriculture1
Air defense1
Automobiles1
Aviation3
Consulting1
Earth sciences2
Electronics5
General4
Geophysics1
International trade3
Mechanics1
Shipbuilding1
Space4
Technology47