関連ワード:  what does a split ring commutator do    what does a split ring commutator do gcse    what does a split ring commutator do gcse physics    what does a slip ring commutator do    what does a slip ring commutator do gcse    what does a split ring commutator do in a dc motor    what does a split ring commutator do in a motor    what does a split ring commutator do in a dynamo    what does the split ring commutator do in an electric motor    how does a split ring commutator work