Word

HSK	Not in HSK
FREQUENCY	Unknown

一一映射 yī yī yìng shè

DEFINITIONS

bijective map (i.e. map between sets in math. that is one-to-one and onto)
one-to-one correspondence

CHARACTERS

一 yī HSK 1	one; a, an; alone
一 yī HSK 1	one; a, an; alone
映 yìng HSK 5	project; reflect light
射 shè HSK 5	shoot, eject, issue forth, emit