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(huì )發(fā)現這兩種性質(zhì)之間的相反關(guān)系，但是對于許多實(shí)際應用來(lái)說(shuō)，兩種特性的同時(shí)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，如果干熱滅菌的本質(zhì)是由于氧化，晶體材料可能阻礙氧擴散到細胞，從而延長(cháng)了滅菌時(shí)間。
