Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
Arabic
English
French
German
Italian
Japanese
Norwegian
Norwegian Bokmål
Polish
Portuguese
Russian
Spanish
Swedish
G
o
o
g
l
e
|
Forvo
|
+
互易定理
el.
Kopplungstheorem
n
;
Reziprozitätstheorem
n
Add
|
Report an error
|
Get short URL
|
Language Selection Tips
