Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
Russian
Tamil
G
o
o
g
l
e
|
Forvo
|
+
translation from other languages
English
German
English thesaurus
Proportional-Integral
controller
abbr.
PI
(
Alex Lilo
)
Add
|
Report an error
|
Get short URL
|
Language Selection Tips
