等价关系 děng jià guān xì

DEFINITIONS

  1. equivalence relation (math.)

CHARACTERS

等 děng
HSK 2
rank, grade; wait; equal; 'etc.'
价 jià
HSK 4
price, value
关 guān
HSK 1
frontier pass; close; relation
系 xì
HSK 1
system; line, link, connection