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 polytechnic dictionary. 2014.
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