1) distribution of diameter
胸径分布
1.
Multiple scales\' distribution of diameter was often came and the better resolved method was not put forward.
在生态学中,尺度问题一直是重点也是难点,多尺度胸径分布问题经常遇到且至今没有很好的解决方法,建立多尺度胸径分布统一模型是解决问题的关键;多尺度胸径分布统一模型的建立包括2方面的内容:第一,选择合适的概率分布函数,应用最大熵原理推出胸径分布统一模型,它具有明确的解析表达式,既能克服常用方法无法解释测树因子服从某种概率分布的真正原因,也能克服常用方法无法区分测树因子服从多种概率分布的不足,从而可以作为林分尺度测树因子概率分布的统一模型。
2) size distribution
粒径分布
1.
Characteristics of size distributions of atmospheric fine particles in the north suburban area of Nanjing.;
南京北郊大气细颗粒物的粒径分布特征
2.
Studies on characteristics of size distribution and formation mechanism of fine particle matters in summer of Ji'nan;
济南夏季大气颗粒物粒径分布特征及来源机理分析
3.
Characterizing of the size distribution of indoor airborne nanoparticle;
室内气溶胶纳米颗粒物的粒径分布特征
3) particle diameter distribution
粒径分布
1.
The morphous, particle diameter distribution, drug content, and stability of the formed emulsion were investigated.
方法分别采用转相超声乳化技术和高压乳匀法制备莪术油亚微乳,比较其形态和粒径分布,HPLC法测定了其含药量,并进行稳定性比较。
2.
The effects which would effect the particle diameter distribution are preliminary analyzed.
探讨了马尔文激光粒度仪测量纳米TiO2分散液粒子粒径分布的规律。
3.
The particle diameter distribution of liquid droplets is one of the key factors involved in the technology for making fluid ice from a liquid-liquid circulating fluidized bed.
液滴的粒径分布是液-液循环流化床制取流体冰技术的关键因素之一。
4) pore diameter distribution
孔径分布
1.
The results indicate that γ Al 2O 3 and ( γ+θ) Al 2O 3 are suitable for carriers, its selectivity both depends significantly on the pore diameter distribution of the carriers and is also improved by adding copper, and the best mol ratio o.
结果表明：载体可以采用γ－Ａｌ２Ｏ３或（γ＋θ）－Ａｌ２Ｏ３，载体的孔径分布对催化剂的选择性影响极大，最佳孔径分布为孔径＞１０ｎｍ的孔占８０％左右；在镍基催化剂中加入铜，可显著提高选择性，ＣｕＯ与ＮｉＯ最佳摩尔比为０。
2.
A cylindrical pore model is used to calculate the pore diameter distribution.
用双气路色谱法测定Ｎ２吸附的ＳｉＯ２负载型催化剂的吸附等温线及吸附回线；用多项式对吸附（脱附）曲线进行拟合；用圆筒孔模型和脱附分支进行此类催化剂的孔径分布计算。
3.
Based on the results of mecury injection and gas absorption analytical methods of caprock,the complete pore diameter distribution diagram of caprock and the capillary pressure curve can be obtained.
将压汞法和气体吸附法2种测定结果换算相衔接可得到完整的盖层全孔隙结构孔径分布图及其毛细管压力曲线,结合全驱岩样饱和水模拟实验即可直接测定岩样突破压力。
5) diameter distribution
粒径分布
1.
Influence of aliphatic polyols on diameter distribution of hydrothermal synthesized zeolite A;
脂肪族多元醇对水热合成A型沸石粒径分布的影响
2.
The conformation principle,performance character and quality control and guarantee rules during operation of Wide-range Particle Spectrometer,a apparatus of observing atmospheric paricle number concentration and diameter distribution,have been introduced,and the existent problems have been discussed at the same time.
介绍了大气颗粒物数浓度及粒径分布观测仪器-宽范围颗粒物分光计的构造原理、性能特点及操作中的质量控制与保证规程,并对存在的问题进行了论述。
3.
This paper sets up the relations of all the selected parameters and goes deep into the influence these parameters (roundness, diameter distribution, average diameter) impose on the interactional force of Aeolian sand; Validate some phenomena exist in the desert dune.
以北京北郊的沙漠沙为研究对象,对其多种物理特性进行测量和分析,提取其中的流体力学和粉体力学特征,建立这些特性参数之间的横向联系,指出了圆度、粒径分布和平均粒径等形貌特征参数对于沙粒的颗粒间作用力效果的重要影响;用测量结果验证和解释了沙丘结构的一些现象和规律。
6) pore distribution
孔径分布
1.
The results show that the surface area, pore volume and pore distribution are the main factors for water vapor adsorption properties of sepiolite.
结果表明:影响海泡石吸湿性能的主要因素是其比表面积、孔容积和孔径分布。
补充资料：调和平均粒径
分子式：
CAS号：
性质：在混合颗粒中，直径为d1、d2、…dn的颗粒的质量分率，分别为x1、x2、…xn，则混合颗粒的调和平均直径可按下式计算：
CAS号：
性质：在混合颗粒中，直径为d1、d2、…dn的颗粒的质量分率，分别为x1、x2、…xn，则混合颗粒的调和平均直径可按下式计算：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条