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凹凸透镜 āotū tòujìng
gen. meniscuslens
anim.husb. concavoconvex lens
met. concavo-convex lens; meniscus; meniscus lens
oil concave-convex lens
tech. periscopic lens
凹凸透 镜: 15 phrases in 4 subjects
Electronics2
General2
Technology10
Telecommunications1

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