
[建] 粒度分布
Food powders's particle size distribution fractal dimension could well express the food powders' particle size distribution.
食品粉体颗粒粒度分布分形维能很好的表征颗粒群粒度分布。
So, when the finished particle size distribution, residual moisture content, bulk density and particle shape must conform to precise standards.
因此,当成品的颗粒大小分布、残留水份含量、堆积密度和颗粒形状必须符合精确的标准时。
The particle size distribution of coal has self similarity during the grinding process and can be fit by the fractal equation of particle size distribution.
在煤的粉碎过程中其粒度分布具有自相似特征,可以用粒度分布的分形模型来拟合煤粉碎过程中的粒度分布特征。
The attenuation spectrum of ultrasonic waves through the slurry may provide the information about particle size distribution.
利用超声衰减谱的测量,可以获得泥沙中颗粒粒度分布信息。
High whiteness, appropriate particle size and narrow particle size distribution of the PCC will contribute to improve the quality of paper in a positive way.
PCC较高的白度、 适宜的微观粒径、相对较窄的粒度分布特性,对提高纸张质量有积极的意义。
This investigation of the mechanism of premixing alum-rosin size for neutral-alkaline paper****** process focused on the mixture solution charge and particle size distribution.
中碱性造纸过程中松香明矾预混和过程的研究主要集中在混和液的电荷及粒度分布。
Secondly, the inversion matrix equation of the particle size distribution is obtained from the discrete characteristics of the particle distribution in both mathematical theories and experiments.
其次,根据微粒数分布离散性的特征,建立了微粒粒度分布函数的反演矩阵及其实验方法。
The hydrodynamics of particle agglomeration flow was numerically simulated at the different inlet gas velocity, initial particle size distribution and type of agglomeration mechanisms in the absorber.
对不同入口气体速度、初始颗粒尺寸分布和不同颗粒团聚形成机理下收集器内颗粒聚团流动的流体动力特性进行数值模拟。
Powders' particle size distribution fractal dimension could denote size distribution well.
粉体颗粒粒度分布分形维能很好的表征颗粒群粒度分布。
A detailed description of the particle size distribution of pulverized dust and flue dust measured with gravitational sedimentation method on SA-CP2-20 particle size analyser is given.
本文介绍了在SA-CP2-20粒度分析仪上用重力沉降法测量烟道粉尘和机械破碎粉尘的粒度分布。
The particle size and distribution were determined by transmission electron microscopy and laser particle size distribution analyzer, ultraviolet-visible absorption curve was also characterized.
通过透射电镜、激光粒度分布仪等测定了纳米颗粒的粒径和分布情况,并对纳米金溶胶的紫外可见吸收曲线进行了研究。
A new on-line method to determine the particle size distribution using light ex-tinction is proposed in this paper.
提出了用光透消光法(或称全散射法)对颗粒尺寸及其分布进行实时在线测量的方法。
A laser-scattering method for the determination of particle size distribution of pharmaceutical suspension intended for intravenous use is proposed.
本文报告一种激光散射法测定静脉注射混悬剂的颗粒大小分布情况。
The most part of powder is spherical with a broad particle size distribution.
目前得到的粉末几乎都为球形,但颗粒粒径分布范围比较宽。
Leveberg-Marquart(LM) algorithm is presented as an optimization technique to deal with the inversion problem and determine the particle size distribution(PSD) in light extinction method.
基于限定模式反演算法,由LM优化算法对消光法测量衰减光谱进行反演处理,获得颗粒粒径和分布。
There is much inconvenience in measuring particle size distribution by experiments at present, because of droplets movement complexity in spray drying.
由于喷雾干燥中雾滴的运动较复杂,所以目前多是通过实验测量来确定雾滴粒度分布,有很多不便因素。
Based on this mechanism, a new mathematical model characterizing the material removal rate in CMP process was developed by using micro-contact mechanics and particle size distribution theory.
基于这种机理,应用微观接触力学和磨粒粒度分布理论建立了一种新的表征CMP过程材料去除速率的数学模型。
The influences of these factors and the method for controlling particle size distribution were presented for the reaction precipitation process.
在此基础上,提出了反应沉淀法制备亚微米粒子过程中颗粒粒度及粒度分布的控制方法。
The grindability of coal is an important parameter in pulverized coal utilization, and the HGI(Hardgrove Grindability Index) is relevant to the coal pulverization and the particle size distribution.
可磨性是煤加工利用过程中的一个重要指标,可磨性指数与煤的破碎机理、煤粒破碎后的粒度分布均有关系。
The quantitative symbolization of the characteristics of subalpine coniferous forest soil by the fractal dimension of soil particle size distribution was discussed in the paper.
本研究探讨了利用土壤颗粒粒径分布的分形维数来定量表征川西亚高山针叶林土壤的特征。
The effects of the solid particle size distribution and the binder curing ratio were investigated experimentally.
实验研究了固体粒子尺寸分布和粘合剂固化比的影响。
The HGI is of some relativity to the coal pulverization and the particle size distribution.
可磨性指数和煤的破碎机理、煤粒破碎后的粒度分布均有关系。
The change in particle size distribution of fly ash in grinding process and its influence on the activity of fly ash are presented in this paper.
研究了粉煤灰在机械磨细过程中粒度分布的变化规律,分析了磨细灰的粒度分布特征对其活性的影响。
The condensed phase particle size distribution affects the combustion chamber and nozzle efficiency of solid rocket motors to some extent.
凝聚相微粒尺寸分布对固体火箭发动机燃烧室效率和喷管效率有影响。
The particle size distribution could be adjusted on demands.
产品地粒度分布可以根据要求调整。
In addition, the apparatus may be employed for gauging the solid or liquid particle size distribution in the liquid flow with certain modification of the apparatus.
此项仪器不但可以用来测定气流中的液体雾滴,亦可用于测定气流中的固体微粒,仪器稍加改装,还可测定液流中的固态或液态质点的尺寸分布。
Transmission fluctuation spectrometry (TFS) is a new method for particle size measurements, in which the particle size distribution and particle concentration can be measured simultaneously.
消光起伏法是一种新的颗粒测量方法,可用来同时测量两相流中颗粒的粒径分布和体积浓度。
First, a particle size distribution (PSD) analysis together with a detailed analysis of morphological properties of the excipient particles were performed.
首先,结合辅料颗粒形态特性的细微分析,对颗粒粒径分布(PSD)进行分析。
Effects of ball-milling treatment on particle size distribution, specific surface area, calcium extraction rate and soluble protein content of sliver carp bone powder were stu***d.
以鲢鱼骨为原料,研究球磨处理对鱼骨粉的粒度分布、比表面积、钙提取率和可溶性蛋白含量的影响。
颗粒尺寸分布(Particle Size Distribution,PSD)是指某一物质样品中不同尺寸颗粒的占比情况,通常以统计图表或数学函数形式呈现。该参数用于描述颗粒体系的均匀性、分散度及物理化学特性,是材料科学、环境监测、制药工业等领域的核心分析指标之一。
颗粒尺寸分布通过测量颗粒直径、体积或质量分布来表征物质形态特征。常见测量技术包括:
典型分析参数包括:
数据呈现方式主要有直方图、累积分布曲线和Rosin-Rammler数学模型,其中累积曲线可直观显示特定粒径以下的颗粒占比(英国药典2023版通则<429>)。
权威机构研究表明,精确控制颗粒尺寸分布可使锂电池能量密度提升15-20%(美国能源部2021年储能报告),印证其在现代工业中的关键作用。
Particle size distribution(颗粒分布)是描述物质中不同尺寸颗粒占比情况的术语,常见于材料科学、化学、环境科学等领域。以下是详细解析:
术语构成与定义
综合而言,该术语描述的是样本中不同尺寸颗粒的数量比例或累积频率,例如沙土中砂砾、粉砂和黏土颗粒的占比()。
应用领域
测量方法
常用激光衍射、筛分法或电子显微镜分析,结果常以累积分布曲线或直方图呈现()。
若需具体行业标准或公式参数,可参考国际标准如ISO 13320(激光衍射法)或ASTM B822(筛分法)。更多完整信息可查阅材料科学相关文献或实验手册。
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