Hledat
underground mine ventilation
/ˌʌndɚɡɹˈaʊnd mˈaɪn vˌɛntɪlˈeɪʃən/
Underground mine ventilation
01
the system that supplies fresh air and removes contaminants from underground mines
gramatické informace
Příklady
The underground mine ventilation was upgraded to handle the deeper workings.
LanGeek
