Sign in | English | Terms of Use
DictionaryForumContacts

   Chinese ⇄ English
Google | Forvo | +
井巷掘进爆破所谓井巷掘进，是指为开采矿体或煤层而进行的开挖立井、斜井或平巷的作业,为此而采用的爆破称为井巷掘进爆破
expl. development blasting; exploitation blasting
井巷掘进爆破所谓井巷掘进,是指为开采矿体或煤层而进行的开挖立井、斜井或平巷的作业，为此而采用的爆破称为井巷掘进爆破
expl. exploitation blasting

 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