http://sergeyss1966.livejournal.com/ ([identity profile] sergeyss1966.livejournal.com) wrote in [personal profile] sibved 2015-04-08 12:22 am (UTC)

шарик для гольфа не гладкий, а с ямочками. для улучшения аэродинамики, а в данном случае - уменьшения ветровой нагрузки и придания структуральной прочности.
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