The flywheel I've been using is simply a bar with a bolt in each end for weight.
飞轮我一直在使用仅仅是一个酒吧的一个螺栓在每个月底的重量。
2
Mount restrictor bar into the restrictor bar groove of upper die, mount adjusting bolt for restrictor bar into the bolt hole in the restrictor bar, then mount lower press block, upper press block.
在上模节流棒槽内装入节流棒，将节流棒调节螺栓装配进节流棒的螺丝孔中，再装配上压块。
3
As the bolt tension increase, the tension of rail web, stress of joint bar and stress of joint bolt would increase accordingly, but the displacement of rail would become smaller.