1) mass size distribution
质量粒径分布
2) Number and size distribution
数量和粒径分布
3) 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
4) 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。
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) particle size distribution
粒径分布
1.
Studies of phase holdup and particle size distribution in slurry bubble column reactor;
浆态床反应器中相含率及粒径分布的研究
2.
Transient variations of bed voidage and particle size distribution in expanded bed during yeast suspension loading;
酵母悬浮液进料时膨胀床空隙率和粒径分布的动态变化
3.
Grey connection analysis between the particle size distribution of fly ash-slag powder-cement compound and its fluidity;
粉煤灰-矿渣-水泥体系粒径分布与其流动性的灰色关联
补充资料:裂变产物的质量分布
原子核裂变产生的裂变产物核素的质量数与其在裂变中生成几率的关系,又称裂变产物按质量分布的产额。通常用链产额(Y)与质量数(A)的关系来绘制质量分布曲线(见裂变产额)。附图是热中子引起铀235裂变的质量分布曲线,具有双峰的结构。
裂变产物的质量分布与裂变核的种类、激发能和入射粒子的能量有关。原子序数 Z≤80的核素的产物质量呈对称分布,称对称裂变;Z≥100的核素也主要发生对称裂变;对于90≤Z≤98核素的自发裂变或低激发能的诱发裂变,产物质量呈非对称性分布,称非对称裂变。随着入射粒子的能量或裂变核素激发能的增高,对称裂变的几率增大,在质量分布上表现为两峰间的谷深变浅,甚至有三峰结构出现。
参考书目
H.O.Denschlag,et al.,Physics and Chemistry of Fission 1979, Vol.2,p.155,IAEA, Vienna, 1980.
裂变产物的质量分布与裂变核的种类、激发能和入射粒子的能量有关。原子序数 Z≤80的核素的产物质量呈对称分布,称对称裂变;Z≥100的核素也主要发生对称裂变;对于90≤Z≤98核素的自发裂变或低激发能的诱发裂变,产物质量呈非对称性分布,称非对称裂变。随着入射粒子的能量或裂变核素激发能的增高,对称裂变的几率增大,在质量分布上表现为两峰间的谷深变浅,甚至有三峰结构出现。
参考书目
H.O.Denschlag,et al.,Physics and Chemistry of Fission 1979, Vol.2,p.155,IAEA, Vienna, 1980.
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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