Sign in | English | Terms of Use
DictionaryForumContacts

   Chinese ⇄
Google | Forvo | +
渐开线蜗杆
auto. involute helicoid worm
tech. involute worm

 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