Sign in | English | Terms of Use
DictionaryForumContacts

   English ⇄
Google | Forvo | +
general technical specifications
tech. 通用技术条件
general technical specification
avia. 通用技术规范

 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