Sign in | English | Terms of Use
DictionaryForumContacts

   Chinese ⇄
Google | Forvo | +
to phrases
分层整群抽样
stat. stratified cluster sampling
分 层整群抽样
: 3 phrases in 1 subject
Technology3

 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