Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
Russian
G
o
o
g
l
e
|
Forvo
|
+
to phrases
optical sign
stresses
el.
оптический сигнал
tech.
оптический знак
optical sign:
3 phrases
in 2 subjects
Electronics
2
Nuclear physics
1
Add
|
Report an error
|
Get short URL
|
Language Selection Tips
