The new process used spinning flanging replace drawing to achieve multi-V pulleyside wall separate thickening;
该方案采用旋压翻边取代拉深,实现了多楔轮侧壁的单独增厚;
2
Rather than carry the bricks down by hand, I decided to lower them in a barrel by using a pulley, which, fortunately, was attached to the side of the building at the sixth floor.