Hypernyms:glass
Inherited Hypernyms:optical glassglasssolidmatterphysical entityentity
Direct Hyponyms:crown glassflint glassoptical crownoptical crown glassoptical flint
Full Hyponyms:
optical crownoptical flint
单词 | optical glass |
释义 | Optical Glass nnoun.substanceclear homogeneous glass of known refractive index; used to make lenses Hypernyms:glass Inherited Hypernyms:optical glassglasssolidmatterphysical entityentity Direct Hyponyms:crown glassflint glassoptical crownoptical crown glassoptical flint Full Hyponyms: optical crownoptical flint |
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