利用现有方法制备铝纳米粉时易引入杂质，周期较长，产物尺寸分布均匀性较差。
When the existing method is adopted for preparing aluminum nanometer powder, impurity can be introduced easily, the period is long, and the uniformity of size distribution of the product is bad.
采用X -射线衍射、差热分析、微量热计及压汞测孔仪对公路粉煤灰水泥的水化产物、水化放热曲线、孔尺寸分布进行了研究。
The hydrated products and pore size distribution of high road fly ash cements were studied by means of XRD, DTA, Mercury porosimeter, etc.
详细研究了三乙胺的用量、表面活性剂、反应温度和时间对产物形貌及尺寸的影响。
The influences of triethylamine amount, surfactant, reaction temperature and time on the size and shape of lanthanum hydroxide nanorods were investigated in detail.
此外，氧化环境的组分及压力也会影响燃烧产物的颗粒尺寸、粒度分布和形态。
In addition, the content and pressure of oxidizing environment also influence sizes, size distribution, shape of combustion products.
论文考察了反应物浓度、水热温度、水热处理时间等因素对产物粒度分布、粒径尺寸、形貌等的影响。
We found that the granularity, size and shape of the products were affected by the concentration of the reactants, the temperature and the time of the hydrothermal reaction.
可以通过调节反应时间和反应物浓度控制产物的尺寸和形貌。
The morphology and structure can be controlled by changing the concentration of reactants and the reaction time.
通过对比反应产物，发现球磨处理是控制纳米管生成的必要步骤，这可以归结为球磨处理对反应物微粒尺寸的影响。
By comparing the as-synthesized samples, we can discover that ball-milling treatment is necessary to the formation of nanotubes owing to its effect on the dimension.
实验结果表明：布料时有序地改变反应物料的化学组成，可以在产物中不同区域产生不同尺寸的孔洞， 形成梯度多孔陶瓷。
The results show that, ordinal variations in the composition of the reactants during packing can get different sized pores and produce gradient porous ceramics.
XRD和TEM分析表明，随着溶剂介电常数和极性增加， 所生成产物的物相纯度、结晶度增高，晶粒尺寸增大。
XRD and TEM analyses show that the phase purity, crystallization and particle sizes of synthesized powders increase with the increase of the dielectric constant and polarity of the solvent.
XRD和TEM分析表明，随着溶剂介电常数和极性增加， 所生成产物的物相纯度、结晶度增高，晶粒尺寸增大。
XRD and TEM analyses show that the phase purity, crystallization and particle sizes of synthesized powders increase with the increase of the dielectric constant and polarity of the solvent.
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