等差數列 děng chā shù liè

DEFINITIONS

  1. arithmetic progression

CHARACTERS

等 děng
HSK 2
rank, grade; wait; equal; 'etc.'
差 chā
HSK 3
to differ; different, wrong; nearly, almost; an officer
數 shù number; several; count; fate
列 liè
HSK 4
a line; to arrange in order, classify