Широкая инженерная мысль

14-October-2016 Friday
PWM (broad engineering thought) in Russian or "Roller coaster" for wheelchair users or a miracle ramp.

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PWM (broad engineering thought) in Russian or "Roller coaster" for wheelchair users or a miracle ramp.

Ramp Пандус, Широкая инженерная мысль Широкая инженерная мысль