If the applied bending force is not sufficient to cause permanent plastic flow at either the inner or outer surfaces, the metal will return elastically to its original shape. 如果實際的彎曲力不足以在內表面或外表面引起永久的塑性流動，金屬會自動恢復到原來的形狀。
The size of the filament depends on the rate of flow through the hole of the spinneret rather than on the size of the hole. 所製成長絲的直徑取決於粘膠在噴絲頭孔中的流速，而不取決於孔徑的大小。
When viscous forces predominate the flow is proportional to the pressure drop across the element. 當粘滯力起主導作用時，流量當通過主要部分的壓力降或正好。
