/presh"euhr vak"yooh euhm, -yoohm/
a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits.
/presh"euhr vak"yooh euhm, -yoohm/
a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012