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to phrases
凸凹透镜
tū’āo tòujìng
el.
convex -concave lens
;
convexo -concave lens
tech.
convexo-concave lens
;
meniscus
telecom.
divergent meniscus lens
凸 凹 透镜
:
17 phrases
in 5 subjects
Animal husbandry
1
General
3
Metallurgy
3
Oil / petroleum
1
Technology
9
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