Normally dies have to have at least one support ring as the internal pressures are high enough to cause transverse cracking due to tangential or triaxial stresses respectively.
通常当内部压力由于切向或者各个空间应力高到足以发生横向破裂时，凹模必须至少有一个加强圈。
2
Methods Into the inner ring road, separation peritoneum and abdominal transverse compartment of loose bodies and the creation preperitoneal space, home patch this gap.
方法经内环入路，分离腹膜与腹横筋膜间的疏松组织联系，创建腹膜前间隙，置补片于此间隙内。
3
This paper studies the problem of free transverse vibration of circular plates with an arbitrary number of the concentric elastic ring supports, a new analytical solution is presented.