Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
Russian
G
o
o
g
l
e
|
Forvo
|
+
to phrases
光学标准
el.
optical calibration
tech.
optic standard
;
optical standard
光学 标准:
14 phrases
in 7 subjects
Aviation
2
Ecology
1
Electronics
4
General
1
Space
2
Technology
3
Telecommunications
1
Add
|
Report an error
|
Get short URL
|
Language Selection Tips