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(méi)技術(shù)研究在聚四氟乙烯輻照接枝過(guò)程中的自由體積與正電子湮沒(méi)壽命譜的關(guān)系。 - With the augmentation of grain size, surface defects of the manganese zinc ferrite nanocrystallines minish, and intergranular free volume combines.
隨著(zhù)粒徑的增大，納米晶的表面缺陷減小，晶界間的自由體積發(fā)生復合。
