This paper develops the research of the measure instrument of non-cylindricalpin bore which can meet the users' requirements at the aspects of its precision, efficiency, and economy.
本论文正是要开展异型销孔轮廓测量仪的研究，使其测量精度、效率、经济性都能满足用户要求。
2
"The follower is a cylindrical component with a helical slot and a pin that runs through it," he adds.
从动装置是一个圆柱形的组件，带有一个螺旋状的槽和一个销子。
3
Objective: To evaluate the clinical of using prefabricated cylindrical root canal pin to lengthen the clinical crown and restoring anterior tooth and premolar defect with PFM.