等
比
级
数
d
é
n
g
d
ě
n
g
b
ǐ
b
ǐ
j
í
j
í
s
h
ù
s
h
ù
Definitions
1. geometric series (such as 1+2+4+8+...)
Components
等比
děng bǐ
–
geometric (of mathematical sequences or progressions)
级数
jí shù
–
(math.) series