Revenues have been on the decline for a third straight year, even with strong growth in digital imaging segment.

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The hardware segment, shrinking since 2011, may suffer sooner: For the third quarter ended in March, trailing 9-month sales were down 17%.

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The two variants share many design features but use different engines in their third segment, or stage - the part of the Soyuz said to have been responsible for the failure five days ago.

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