硬币
coin
coinage
COINS
specie
hard currency
hard money
hard cash
纸币
Note
Paper
notes
Banknote
Banknotes
paper money
Paper currency
folding money
shinplaster
soft money
法定
statutory
legal
Law
Legally
Infectious
Notifiable
principle
penalty
硬币检测
recognition of coin
coin detection
Detecting of coin
coin inspection