Jednak się nie przyda? Nic nie szkodzi! U nas możesz zwrócić towar do 30 dni
Bon prezentowy to zawsze dobry pomysł. Obdarowany może za bon prezentowy wybrać cokolwiek z naszej oferty.
30 dni na zwrot towaru
As waterfall is rainfall passing through mountain, the new idea is producing artificial waterfall for capturing power of rain using new wind blade called wind-rainfall blade which can convert mechanical energy of wind and waterfall to electrical energy with separate control. The idea can also be used for some natural waterfalls. Furthermore the book illustrates the turbulence effect on this new station.