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单词 eye structure
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> as lemmas

eye structure
eye structure n. Geology a rock texture marked by the presence of lens-shaped mineral grains or aggregates; cf. sense 10d.
ΚΠ
1888 F. H. Hatch Gloss. Terms Rocks 11 Eye-structure. In this structure..the foliated and secondary minerals are arranged in layers round the larger original constituents, producing lenticular forms which often bear a striking resemblance to eyes.
1931 tr. R. Ijzerman Outl. Geol. & Petrol. Surinam 284 The lack of crushing..points to the fact that the eye-structure here is not a result of pressure.
1990 R. Mason Petrol. Metamorphic Rocks (ed. 2) iii. 73 This 'eye structure' of the cleavage is not due to the growth of the andalusite crystal pushing aside the cleavage.
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