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to phrases
凹凸透镜 āotū tòujìngstresses
el. мениск
mil. выпукло-вогнутая линза
tech. вогнуто-выпуклая линза; менисковый объектив; положительный мениск
凹凸透镜聚光透'镜 āotū tòujìng
tech. положительный мениск
凹 凸透镜: 3 phrases in 1 subject
Technology3

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