«Основные понятия механизации и автоматизации производства» Water-driven bellows for blast furnaces, Employed in China in historical occasions, were in use in Europe because of the 15th century. De re Metallica has drawings connected to bellows for blast furnaces which includes a fabrication drawing. Это особенно важно в современной промышленности, https://giosueh743jjn0.blogacep.com/profile