جستجو
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underground mine ventilation
/ˌʌndɚɡɹˈaʊnd mˈaɪn vˌɛntɪlˈeɪʃən/
Underground mine ventilation
01
the system that supplies fresh air and removes contaminants from underground mines
اطلاعات دستوری
مثالها
The underground mine ventilation was upgraded to handle the deeper workings.
LanGeek
