upstroke of the piston

См. также в других словарях:

• upstroke — noun the upward stroke of a brush, piston etc Ant: downstroke …   Wiktionary

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• up|stroke — «UHP STROHK», noun. 1. an upward stroke, as of a pen or pencil. 2. a stroke delivered upwards: »the upstroke of a piston …   Useful english dictionary

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