lower guide-vane ring — нижнее кольцо направляющего аппарата
diagonally-cut piston ring — поршневое кольцо с косым замком
step-out piston ring — поршневое кольцо с замком внахлестку
runner wearing ring — уплотнительное кольцо рабочего колеса
runner sealing ring — уплотнительное кольцо рабочего колеса
English-Russian big medical dictionary. 2005.
sewing ring — a cloth covered ring that surrounds a prosthetic heart valve and holds it in position … Medical dictionary
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bileaflet valve — a type of prosthetic heart valve consisting of a sewing ring surrounding a circular valve seat, to which are attached two semicircular occluding disks that swing open and closed to regulate blood flow … Medical dictionary
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