平面曲线 píng miàn qū xiàn

DEFINITIONS

  1. (math.) plane curve

CHARACTERS

平 píng
HSK 3
flat, level, even; peaceful
面 miàn
HSK 1
face; surface; plane; side, dimension
曲 qū
HSK 6
crooked, bent; wrong, false
线 xiàn
HSK 4
line, thread, wire; clue