material n.材料；原料；素材；资料；题材；物质adj.物质的；重要的；关键的；肉体上的；实质性的
双语例句
The machinability of crystal material is studied, and the influence of the cutting condition on surface roughness is analyzed. 本文探讨了晶体材料的切削加工性，重点分析了切削条件对表面粗糙度的影响。
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。
