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director telescope; optic foresight; optical foresight; optic laying equipment; optical laying equipment; optic viewfinder; optical viewfinder | |||
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director telescope | |||
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optical sight | |||
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director telescope |
光 学 瞄准器 : 6 phrases in 3 subjects |
Aviation | 1 |
Space | 3 |
Technology | 2 |