單葉雙曲面 dān yè shuāng qū miàn

DEFINITIONS

  1. hyperboloid of one sheet (math.)

CHARACTERS

單 dān single, individual, only; lone
葉 yè leaf, petal; page of book; period
雙 shuāng set of two, pair, couple; both
曲 qū
HSK 6
crooked, bent; wrong, false
面 miàn
HSK 1
face; surface; plane; side, dimension