Sign in | English | Terms of Use
DictionaryForumContacts

   English ⇄
Google | Forvo | +
standard oxygen transfer efficiency
tech. 标准转氧效率
water.res., ecol. 标准转氧效率

 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