In usual crystalline materials, one finds an inverse relation between the two properties, as for many practical applications, simultaneous presence of both properties is desirable. 在普通的晶体材料中，人们会发现这两种性质之间的相反关系，但是对于许多实际应用来说，两种特性的同时存在才是人们所追求的。
First, if the nature of dry-heat sterilization is due to oxidation, the crystalline material may impede the diffusion of oxygen to the cell, thus extending the time to sterilize. 第一，如果干热灭菌的本质是由于氧化，晶体材料可能阻碍氧扩散到细胞，从而延长了灭菌时间。
