Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
G
o
o
g
l
e
|
Forvo
|
+
preliminary development phase
This HTML5 player is not supported by your browser
econ.
初步开发【研制】阶段
el.
初步研制阶段
;
预研阶段
Add
|
Report an error
|
Get short URL
