Sign in | English | Terms of Use
DictionaryForumContacts

   English ⇄
Google | Forvo | +
percussion rotation drilling
eng.geol. 冲击回转钻进
percussion-rotation drilling
tech. 冲击回转钻进

 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