Sign in | English | Terms of Use
DictionaryForumContacts

   English ⇄
Google | Forvo | +
stellar inertial Doppler system
el. 天体惯性多普勒导航系统
space 天文惯性多普勒导航系统

 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