1)Rietveld refinement结构精修
1.The type and the chemical state of non-framework aluminum and the related influence on zeolite acidity were investigated by means of 27Al MAS NMR,N2 adsorption-desorption,XRD Rietveld refinement.采用27Al MAS NMR、N2吸附-脱附、IR等表征技术及XRD Rietveld结构精修的方法,通过清除和交换引入非骨架铝,探讨了USY沸石中非骨架铝的形态。
英文短句/例句
1.Influence of the synthesis temperature on LiFePO_4 crystalline structure by rietveld refinement结构精修研究合成温度对LiFePO_4结构的影响
2.Purification of Onion Like Fullerenes and XRD Structural Refinement;洋葱状富勒烯的提纯及XRD结构精修
3.Investigation on the Relativistic Corrections and the Fine Structure of the Energy Levels in Helium-like Atoms;炎氦离子能级的相对论修正和精细结构的研究
4.Finite element model and accuracy analysis of scarf patch repaired composite structures复合材料挖补修理结构的有限元建模及精度影响分析
5.Theory of accuracy assessment and methods for error correction in 3D geological structure models三维地质结构模型精度评估理论与误差修正方法研究
6.Conclusions The nose is a special portion of the body with fine configuration. Once destroyed,it is difficult to restore.结论小儿鼻血管瘤部位特殊,构造精细,结构一旦破坏,很难予以满意修复。
7.MASONARY RESTORATION & CLEANING砖石结构的修复和清理
8.Sommerfeld fine-structure constant索末菲精细结构常数
9.of delicate composition and artistry.指精致的结构和艺术性。
10.The cydodextrins have a unique structure.环糊精具有独特的结构
11.a delicate mechanism, structure, etc精巧的机械装置、 结构等
12.accurate x ray structure analysis精密x 射线结构分析
13.fine featured resist精细结构光刻用抗蚀剂
14.Test Results and Accuracy Analysis of the Terminal Correctional Sub Projectile Sensor末修子弹敏感器试验结果及精度分析
15.The structure of vas deferens and formation of spermatophore in crayfish,Cherax quadricairnatus红螯螯虾输精管的结构及精荚的形成
16.Exquisite Structure Undispelled Emotional-knot --Appreciation of structure in《Moonlight over lotus pool》;精妙的结构 难解的情结——《荷塘月色》结构赏析
17.Studies on the Structure Modification and Crystal Structures of Isoflavone Components from Flowers Pueraria;葛花异黄酮成分结构修饰及晶体结构研究
18.Mending Wall: A Structural and Rhetorical Analysis;论弗罗斯特的名诗《修墙》的结构与修辞手法
相关短句/例句
Rietveld refinementRietveld结构精修
1.The crystal structures of some high-crystallinity products are refined by the X-ray diffraction Rietveld refinement method, their crystal models are upbuilt.选取高结晶度的类水滑石材料进行X射线粉末衍射Rietveld结构精修，建立了晶体结构模型。
2.Meanwhile,the Rietveld refinement method was employed to study the effect of Lu doping on the crystal structure.采用Rietveld结构精修的方法研究了不同掺杂量对晶体结构的影响,研究表明,体系的固溶区范围大约为x=0。
3)Rietveld structure refinementRietveld结构精修
4)Crystal Structure Refinement晶体结构精修
5)functional precision structure modifer功能型精确结构修饰物
6)structure modification结构修饰
1.Advances in structure modification and synthesis of piracetam-like nootropics;吡拉西坦类促智药的结构修饰及合成研究进展
2.Recent advances in the study of structure modification of somatostatin;生长抑素的结构修饰研究进展
3.Progress in structure modification of triptolide;雷公藤内酯醇的结构修饰研究进展
延伸阅读
结构精修分子式：CAS号：性质：对解析所得粗结构中原子坐标等参数的精化称作精修。晶体结构精修的实质与过程可归结为在已有逼近真值的m个初始结构参变量(诸j原子的坐标、热参数、占有率)xj等的条件下，设法调节m个结构参数量，使n个结构因子模的计算值∣Fc∣最大限度地逼近n个结构因子模的实验值∣Fo∣的计算问题。精修中一般采用最小二乘法，基于对函数D≡∑[∣Fc∣n(x1，…xj，…xm，)_∣Fo∣n]2。派生的等满足极值的条件，建立m个正规方程及相应的系数矩阵。待求的m个结构参变量的修正量可通过全矩阵或块矩阵精修导出。
