split-ring commutator — коллектор из двух полуколец
flat commutator — коллектор с местной выработкой
shrink-ring commutator — коллектор с бандажами
commutator ring — стяжное кольцо коллектора
commutator cap — нажимная шайба коллектора
English-Russian big polytechnic dictionary. 2014.
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