埃
尔
朗
根
A
ī
A
ī
é
r
ě
r
l
ǎ
n
g
l
ǎ
n
g
g
ē
n
g
ē
n
Components
埃
Aī
–
PN:abbr. for Egypt 埃及[Ai1 ji2]
尔
ěr
–
thus
朗
lǎng
–
clear
根
gēn
–
root
Related Words
埃尔朗根纲领
Aī ěr lǎng gēn gāng lǐng
–
PN:Felix Klein's Erlangen program (1872) on geometry and group theory