二次粒子

TEM测定α-Al2O3载体的二次粒子堆积孔大小及分布

Measurement of size and distribution of secondary particle piled pore of α - Al_2O_3 carrier by TEM

由粉石英制备的硬硅钙石二次粒子球具有中空结构，而白炭黑对应样品则以纤维聚集成的块体为主，成球差。

The secondary particle sphere of xonotlite yielded by konilite is of hollow structure , however , for the carbon white fibrous crystal just stacked densely and balling up is poor .

薄膜表面由TiO2的二次粒子堆积而成，呈不规则球形，三维形貌为尖塔状突起结构，其中改性后的样品表面颗粒更为细小，成膜更为致密。

The film surface was piled by the irregular spherical secondary particles of TiO2 , the three-dimensional morphology was some steeple-like protrusions .

一次粒子聚集成粒径30～50nm、质量分形维数Dm≈27的二次粒子。

Primary particles are aggregated into 30 ~ 50nm secondary particles with mass fractal dimension D m ≈ 2.7 .

将具有中空结构的硬硅钙石二次粒子和具有纳米孔结构的SiO2气凝胶用真空复合技术将其制备成具有良好绝热性能的绝热材料。

The super thermal insulating materials can be prepared by using xonotlite with hollow structure and SiO2 aerogel with nanometer pores structure through vacuum compounded method .

烘干收缩率降低的原因是2CaO·SiO2的加入促进了二次粒子形成。

The reason for the decrease of the drying shrinkage is that the adding of C2S promoted the formation of the secondary grains .

大气中超细颗粒物（PM2.5）的产生途径主要包括直接排入大气中的一次粒子，以及大气中的气态前驱物通过光化学作用转化生成的二次粒子。

The ultrafine particles ( PM2.5 ) in atmosphere include primary particles discharged into the atmosphere directly , and secondary particles generated from gas precursor through the photochemical role .

原料中加入Sr（NO3）2添加剂后有利于生成硬硅钙石晶体，硬硅钙石二次粒子球形明显，也可以看到明显的硬硅钙石纤维；

Sr ( NO_3 ) _2 additive is also beneficial to the preparation of the xonotlite . The globular secondary particles could be seen obviously and the fibers could also be seen clearly by using Sr ( NO_3 ) _2 as an additive .

不同硅质原料对硬硅钙石二次粒子形貌的影响

Effect of different silica raw materials on feature of xonotlite second particles

利用天然粉石英制备中空硬硅钙石二次粒子研究

Study on Preparation of Hollow Xonotlite Secondary Particles by Natural Powder Quartz

硬硅钙石中空二次粒子球形成机理的探讨

Study on formation mechanism of hollow secondary particles of xonotlite

北京氨源排放及其对二次粒子生成的影响

Ammonia Emission and Its Effects on the Formation of Secondary Particles in Beijing

基于二次粒子群算法的投资组合优化

Portfolio optimization based on quadratic particle swarm optimization

石英微粉表面结构对硬硅钙石中空二次粒子形貌的影响

Effect of Surface Morphology of fine Quartz on the Hollow Secondary Particles of Xonotlite

添加硬硅钙石二次粒子培养颗粒污泥及其对处理含铅废水的影响研究

Effect of putting xonotlite secondary particles to train granular sludge and treating lead bearing wastewater

但是由于纳米无机粉体具有高的比表面积，易于团聚形成二次粒子，与高聚物的表面相容性较差。

Nano-inorganic powder is easy to agglomerate due to the high specific surface area of itself .

在两种近似情况下，建立了α-Al2O3载体的二次粒子堆积孔模型；

A model of the secondary particle piled pore of α - Al 2O 3 carrier was set in two approximate cases .

硬硅钙石二次粒子培养颗粒污泥并用于处理含铅废水进行了实验研究。

An experimental research of putting xonotlite secondary particles to train granular sludge and treating lead bearing wastewater has been carried out .

在颗粒物源解析的基础上，把环境空气中颗粒物的源类分为有组织排放源、二次粒子、开放源及其它，提出了全面的颗粒物目标容量总量控制方法。

The technique of goal capacity total quantity control of ambient air particulates has been established on the basis of source apportionment of air-borne particulates .

大气氨浓度是北京春、秋、冬3季生成二次粒子的主控因子。

The analysis of the effects of atmospheric ammonia on the formation of secondary particles in Beijing indicated that NH 3 concentrations in atmosphere is the key factor in the formation of secondary particles in spring , autumn , and winter in Beijing .

而非晶态二氧化硅的含量较高时，会阻碍硬硅钙石中空二次粒子球的合成，最终形成硬硅钙石晶体和托贝莫来石晶体的堆积体。

The experiment results show low content of amorphous silicon dioxide in the surface has no effect on the formation of the hollow secondary particles of xonotlite , but high content delays their formation and leads to produce aggregates of xonotlite and tobermorite crystals .

结果显示，北京市大气颗粒物的来源主要有6类：建筑水泥尘/机动车尾气尘/燃煤尘、土壤风沙尘、二次粒子尘、工业粉尘、生物质燃烧尘和燃油尘。

The result of factor analysis showing that there are six major sources of atmospheric particles in Beijing , including construction dust / motor vehicle exhaust dust / coal combustion dust , soil dust , secondary particles dust , industry dust , biomass burning dust and burning oil dust .

溅射中性粒子质谱或称二次中性粒子质谱（SNMS）是一种新的表面分析技术。

Sputtered Neutral Mass Spectroscopy or Secondary Neutral Mass Spec-troscopy ( SNMS ) is a new surface analytical technique .

压水反应堆一回路水中二次带电粒子核反应产物的比活度

Specific Radioactivity Produced by the Secondary Charged Particle Nuclear Reaction in the Primary Circuit Water of PWR

影响能见度的空气污染因子，不仅包括一次源，还应包括经由气-粒转化化学反应而产生的硫酸盐、硝酸盐等二次污染粒子。

Air pollution factors include sulfate or nitrate second particles derived from gas-to-particle transformation as well as original particles .

甲苯与氯原子光氧化产生二次有机气溶胶粒子实时探测研究药用氯化丁基橡胶塞对不同pH注射剂不溶性微粒的影响

Real-time Measurement of Secondary Organic Aerosol Formation from Photooxidation Toluene and Cl Atoms Study of Effect of Medicinal Chlorinated Butyl Rubber Stoppers on Insoluble Micro-Particles in Injections with Different pH Values

高速碰撞下二次破片光滑粒子流体力学法数值模拟

Smooth Particle Hydrodynamic Simulations of Behind Armour Debris for High Velocity Impact

旋转物质二次引力场中粒子的运动

Motion of particle in quadratic gravitational field caused by rotating body

二次分配问题的粒子群算法求解

A Particle Swarm Optimization Algorithm for Quadratic Assignment Problem

文中还进一步分别给出了水解反应的沉淀率一次、二次和三次粒子的粒径随反应时间变化的关系式。

The thesis provided the formulae of the precipitating rate the primary , secondary and tertiary particle sizes of the hydrolyzing reaction as the reaction time is changed .