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Explanation: Further to my own answer, maybe "motor" would be better than "engine" for "dvigatel" in the context given. One would expect a pump to be mounted on an engine, rather than the other way round, but if the pump is driven by an electric or hydraulic motor, this could well be mounted on the pump.
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Jack Doughty United Kingdom Local time: 04:36 Native speaker of: English PRO pts in pair: 14123