Sign in | English | Terms of Use
DictionaryForumContacts

   English ⇄
Google | Forvo | +
logistic function
agric., stat. 标准 S 形曲线功能
busin. 逻辑函数

 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