The measured results can be used to confirm the roughness in the micro-hole in the prayer of FDM, also used to study similar micro-hole on filature and ink jet printer as a reference.

• 该测量结果可用于熔融快速原型机喷头的微小孔内表面粗糙度的确定 ,也可用于研究纺丝机、喷墨打印机等类似微小孔时参考