Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
to phrases
无源系统
compr.
passive system
无源系统
:
43 phrases
in 9 subjects
Air defense
8
Aviation
8
Earth sciences
3
Electronics
8
Geophysics
1
Radio
1
Space
12
Technology
1
Telecommunications
1
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">
Add
|
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">
Report an error
|
Get short URL
|
Language Selection Tips