经验上的

In the paper, study on displacement law of blank hole for forming cylindraceous with bottom border by numerical simulation technology.

通过数值仿真研究了带底孔的圆筒形件成形底孔的变形,此基础建立了带底孔的圆筒形件成形毛料中心孔变形的经验公式。

Objective To summarize the results and experience of supraorbital keyhole approach used for the patients with tumors or aneurysms at superincumbent sellaturcica.

目的总锁孔入路治疗鞍区病变中的应用果与经验。