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凹面透镜
tech. concave lens
凹透镜 āotòujìng
met. concave lens
凹〔负，发散〕透镜
phys.sc. concave lens
凹 透 镜
: 38 phrases in 11 subjects
Agriculture2
Animal husbandry2
Cartography1
Construction2
Desert science1
Electronics2
General4
Metallurgy7
Oil / petroleum1
Technology15
Telecommunications1

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