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. 在普通的晶體材料中，人們會發現這兩種性質之間的相反關係，但是對於許多實際應用來說，兩種特性的同時存在才是人們所追求的。
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，如果幹熱滅菌的本質是由於氧化，晶體材料可能阻礙氧擴散到細胞，從而延長了滅菌時間。
