Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
子午仪研究和姿态控制
space
Transit research and attitude control
(美国军用试验卫星)
Add
|
Report an error
|
Get short URL
|
Language Selection Tips