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双凸面

shuāngtūmiàn

Traditional: 雙凸面

convex on both sides (of lens) / biconvex

Character Breakdown

双
shuāng
pair, couple; both; measure word for things that come in pairs
HSK 3
凸
tū
to protrude, to bulge out; convex
HSK 6
面
miàn
face; surface, side; plane, dimension
HSK 1

Additional Information

Category
Chinese
HSK Character Level
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HSK Word Level
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