双凸面雙凸面

shuāng tū miàn

Maʼnosi

convex on both sides (of lens); biconvex

Ilovada oʻrganish → Chiziq tartibida yozish

Iyerogliflar

双shuāngpair, couple; both; measure word for things that come in pairs又又凸tūto protrude, to bulge out; convex一面miànface; surface, side; plane, dimension