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1)  refinement [英][rɪ'faɪnmənt]  [美][rɪ'faɪnmənt]
精修
1.
The procedure used for this study is the full profile refinement of x-ray powder diffraction patterns using the Rietveld method.
并用Rietveld方法对样品的结构进行了精修,确定了样品中S/Fe原子比的变化范围、键长、键角等结构常数。
2)  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。
3)  rietveld refinement
Rietveld精修
1.
The crystal structure of Gd2O2SO4 was studied with X-ray powder diffraction data using powder solve and Rietveld refinement method,operated within the Reflex module of Materials Studio 4.
0 Reflex模块中Powder solve技术和Rietveld精修方法对Gd2O2SO4的晶体结构进行了研究。
2.
The three series of polycrystalline samples were prepared by conventional solid state reaction method,and then the structural analysis was carried out by Rietveld refinement using the FullProf_Suite package.
用固相法制备了上述系列样品,并用FullProf_Suite软件进行Rietveld精修,系统研究了材料的结构和磁性质,结论如下:(1)对于La_(0。
3.
Co-Si alloy was synthesized by arc melting method,Rietveld refinement test showed that the Co-Si alloy consists of 87.
电弧熔炼法制备了Co-Si合金,Rietveld精修表明Co-Si合金由CoSi_2和CoSi两相组成,相丰度分别为87。
4)  precise repairing
精密修复
1.
The application of laser cladding in the precise repairing of plastic moulds were prospected also.
展望了激光熔覆技术在塑料模具精密修复中的应用。
5)  section finishing
断面精修
6)  Lean maintenance
精益维修
1.
Research on Lean Maintenance Technology of Sucker-rod Pumping System
有杆抽油系统精益维修技术研究
2.
In order to solve these problems, the developed European countries and the United States together with their military forces have put forward the concept of lean maintenance based on the lean production to develop a complete system of m.
针对这些问题,欧美等工业发达国家和军方借鉴“精益生产”的思想,提出了“精益维修(leanmaintenance,LM)”的概念,运用综合集成的方法对各种先进的维修理论和技术进行了系统研究,形成了一套完整的精益维修理论、技术方法,并取得了大量成功实践,这里主要是对“精益维修”的出现背景、基本概念和及其支撑技术发展现状的综合论述。
补充资料: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,)_∣Fon]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。

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