Bottleneck dilatation method and dypass method can only control SC bottleneck when it has come into being.Therefore these two methods cannot solve the problem radically.

• 消减供应链瓶颈的瓶颈舒张法和侧路消减法属于事后控制措施，虽然具有一定成效，但仍无法从根本上解决瓶颈问题。