双凸面 shuāng tū miàn

convex on both sides (of lens); biconvex

Word data

HSK Not in HSK
Frequency Unknown

Definitions

  1. 1. convex on both sides (of lens)
  2. 2. biconvex

Characters

Character Meaning
双 shuāng HSK 3
pair; double; both
凸 tū HSK 6
to stick out; protruding; convex
面 miàn HSK 1
face; surface; aspect