尺寸分级,size-selecting
classification dimensions分级尺寸
3)multilevel block sizes多级分块尺寸
4)dual-sized hierarchical structure双尺寸分级结构
5)graded gravel按尺寸分级的砾石
6)molecular dimension分子尺寸
1.The method to calculate the minimum cross-sectional diameter of heavy oil character molecule and to show the molecular dimension was brought forward,which was used to predict the minimum cross-sectional diameter of some typical heavy oil character molecules.采用量子化学方法计算得到重油特征分子的几何结构,提出了用量子化学方法计算重油特征分子的最小横截面直径和描述分子尺寸的方法。
2.To meet the needs for study the shape selectivity of zeolite molecular sieves,an approach for estimation of molecular dimensions was developed.为满足研究沸石分子筛择形选择性的需要,对分子尺寸的估算进行了探讨。
3.A systematic approach for predicting the hindrance factor of macromolecular diffusion in micropores is reported, simultaneously taking into account the molecular dimension and shape effects.研究了大分子在微孔中的阻滞扩散,描述一种同时计算分子尺寸和形状对阻滞效果影响的方法,并使用聚碳酸酯核径迹膜对4种典型形状的大分子进行了实验研究。
延伸阅读

尺寸尺寸 尺寸   脉学名词。   ①尺脉与寸脉。《灵枢·终始》:“少气者,脉口人迎俱少,而不称尺寸也。”   ②寸口脉。《难经·二难》:“尺寸者,脉之大要会也。”