free volume的用法和樣例：
例句
- The positron annihilation technique was applied to study the relation between relative free volume and irradiated graft for PTFE.
用正電子湮沒技術研究在聚四氟乙烯輻照接枝過程中的自由體積與正電子湮沒壽命譜的關係。 - With the augmentation of grain size, surface defects of the manganese zinc ferrite nanocrystallines minish, and intergranular free volume combines.
隨著粒徑的增大，納米晶的表面缺陷減小，晶界間的自由體積發生複合。
