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independent reflections
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  个独立反射的
     A full-matrix least square refinement with secondary extinction as a structure parameter gave R=0.058 for 1282 independent reflections.
     包括把二次消光作为晶体结构参数的全矩阵最小二乘法修正给出1282个独立反射的R=0.058。
短句来源
     A full-matrix, least square refinement gave R=0.067, Rw =0.058 for 335 independent reflections.
     全矩阵最小二乘法修正给出335个独立反射的R=0.067,R_w=0.058。
短句来源
  “independent reflections”译为未确定词的双语例句
     Z=4, D_c=1.51g/cm~3. The final R=0.033 for 2569 observed independent reflections.
     Z-4,D_m=1.50,D_c=1.51g/cm~3.对于2569个可观测反射点.
短句来源
     , Z = 4, C13H11N3O2, Mr = 241.25, Dc = 1.371g/cm3 , m = 0.096 mm-1, F(000) = 504, the final R = 0.0832 and wR = 0.115. 2384 independent reflections were collected and 2059 (I >2(I)) can be observed.
     , Z = 4, Dc =1.371 g/cm3 , m =0.096 mm-1, F(000) = 504,结构偏离因子R = 0.0832, wR = 0.1158,共收集到2384个独立衍射点,其中其I >2(I)的可观测点为2059个。
短句来源
     Colorless crystal of pentafluoropropionylcarbomethoxymethylene triphenylarsorane is monoclinic, space group C_2~2-P2_1, with unit cell parameters a=11.917(3)A, b=9.495 (1) A, c=11.729(3)A, β=117.82(2)°, Z=2. The intensities of 2558 independent reflections were recorded on a four-circle diffractometer.
     五氟丙酰基甲氧羰基亚甲基三苯基胂是无色透明晶体,属单斜晶系,空间群C_2~2-P2_1.晶胞参数:α=11.917(3)A,b=9.495(1)A,c=11.729(3)A,β=117.82(2)°,Z=2.用四圆衍射仪收集衍射强度数据,得到独立可观察点2558个.
短句来源
     The structure has been refined by full-matrix least-squares procedure to R = 0.043 for 2258 [I≥ 3σ(I)] independent reflections.
     各原子坐标及热振动参数经全矩阵最小二乘方修正,对于2258个独立衍射点(I≥3σI)],偏离因子R=0.043。
短句来源
     Z=8, D_c=1.40g/cm~3. The final R=0.031 for 1809 observed independent reflections. The conformations of these two new phosphadiazine compounds and the factors which influence the conformations were discussed.
     Z=8; D_m=1.39,D_c=1.40g/cm~3.对于1809个可观测反射点,最终的R=0.031.对这两种新型的磷杂三环化合物的构象进行了分析,并指出了影响磷杂环构象的原因.
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  相似匹配句对
     Reflections on the "Independency" of the Independent College
     对独立学院“独立性”的反思
短句来源
     Reflections on Perfecting Independent Director System
     对完善独立董事制度的几点思考
短句来源
     and (3)reflections.
     (3)反思。
短句来源
     independent learning
     三、大学生英语自主学习策略培训的构建
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     Modules are independent.
     各功能模块之间相互独立。
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  independent reflections
The structure of Iwas solved by the direct method and refined by the full-matrix least-squares method in the anisotropic approximation to R= 0.047 over all 3044 measured independent reflections (CAD4 automated diffractometer, λMoKαradiation).
      
The structure was solved by the direct method and refined by the least-squares method in the anisotropic approximation to R= 0.099 over all 2620 measured independent reflections (CAD4 automated diffractometer, λMoKαradiation).
      
Structure Iis solved by the direct method and refined by the full-matrix least-squares method in the anisotropic approximation: R= 0.079 for all 3194 measured independent reflections (CAD-4 diffractometer, λMoKα).
      
Structure I was solved by the direct method and refined by the least squares method in full-matrix anisotropic approximation to R = 0.051 for all 2690 measured independent reflections (CAD4 autodiffractometer, λMoKα).
      
Structure I was solved by the direct method and refined by the full-matrix least-squares method in the anisotropic approximation (final R = 0.075 for all 5187 measured independent reflections).
      
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A single-crystal X-ray diffraction analysis has been performed on LiNdP4O12 synthesized by the flux method. The crystal belongs to monoclinic system, with space group C2/c, z=4, and cell parameters α= 16.486 A, b = 7.073 A, c =9.775 A and β = 126.23°. A full-matrix, least square refinement gave R = 0.054, Rw= 0.050 for 1251 independent reflections. An absorption and secondary extinction refinement gives final R = 0.048. Rw = 0.043. The basic structural units are helical ribbons, (P03)n, formed by corner-sharing...

A single-crystal X-ray diffraction analysis has been performed on LiNdP4O12 synthesized by the flux method. The crystal belongs to monoclinic system, with space group C2/c, z=4, and cell parameters α= 16.486 A, b = 7.073 A, c =9.775 A and β = 126.23°. A full-matrix, least square refinement gave R = 0.054, Rw= 0.050 for 1251 independent reflections. An absorption and secondary extinction refinement gives final R = 0.048. Rw = 0.043. The basic structural units are helical ribbons, (P03)n, formed by corner-sharing of P04 tetrahedra. The Nd08 dodecahedra are isolated from each other in the sense that they do not share any O atoms.

对于盐熔法合成的LiNdP_4O_(12)单晶进行了X射线衍射分析,该晶体属于单斜晶系,空间群为C2/c,z=4,晶胞参数为:α=16.486A,b=7.073A,c=9.775A,β=126.23°,全矩阵最小二乘法修正给出1251个独立反射的R=0.054,R_ω=0.050,经吸收和次级消光校正后,R=0.048,R_ω=0.043,基本的结构单位是(PO_3)_n的螺旋带,它们由共角的四面体构成,十二面体NdO_8不共有任何O原子,从这意义来说是相互分立的。

The crystal of 15-crown-5 nitrate praseodymium with composition Pr(N03)3C10H20O5 belongs to monoclinic system. The space group is C2h5-P2t/α with lattice parameters α = 13.622 A, b = 14.599 A, c = 9.336 A, β = 95°20' and 4 molecules in the unit cell. The intensities of 2853 independent reflection were collected by the PW-1100 four-circle diffractometer. The structure was solved by heavy-atom method and refined to a final R = 0.080 by block diagonal least square method. The praseodymium coordination comprises...

The crystal of 15-crown-5 nitrate praseodymium with composition Pr(N03)3C10H20O5 belongs to monoclinic system. The space group is C2h5-P2t/α with lattice parameters α = 13.622 A, b = 14.599 A, c = 9.336 A, β = 95°20' and 4 molecules in the unit cell. The intensities of 2853 independent reflection were collected by the PW-1100 four-circle diffractometer. The structure was solved by heavy-atom method and refined to a final R = 0.080 by block diagonal least square method. The praseodymium coordination comprises the five crown oxygens (Pr-Ocrown = 2.545 A) and two oxygens from each of the three bidentate nitrates (Pr-ONO3-= 2.685 A). The coordination number is eleven.

15-王冠-5硝酸镨晶体的分子式为Pr(NO_3)_3C_(10)H_(20)O_5,属单斜晶系,空间群为C_(2H)~5P2_1/α,晶胞参数α=13.622埃,b=14.599埃,c=9.336埃,β=95°20′,晶胞内分子数z=4,用Pw-1100四圆衍射仪收集衍射强度数据,独立衍射点数2853个,用重原子法解晶体结构,结构参数的修正采用准对角矩阵最小二乘方法,R=0.080,镨由5个冠醚氧(P_I-O_(crown)=2.545埃)和三对双配位基的硝酸根中的两个氧(Pr-O_(NO_3~-)=2.685埃)构成配位,配位数是11。

In this paper, we report the crystal structure of the low temperature form of barium borate-a new type of SHG material. Ba3(B3O6)2 crystal belongs to trigonal system with space group C34-R3. There are 6 formula units in one hexagonal cell. The unit cell dimensions referring to hexagonal axes are a = b = 12.532 A, c = 12.717 A. Diffraction data were collected on Philips PW-1100 four-circle diffractometer. The number of independent reflections amounts to 693. The structure was determined by conventional...

In this paper, we report the crystal structure of the low temperature form of barium borate-a new type of SHG material. Ba3(B3O6)2 crystal belongs to trigonal system with space group C34-R3. There are 6 formula units in one hexagonal cell. The unit cell dimensions referring to hexagonal axes are a = b = 12.532 A, c = 12.717 A. Diffraction data were collected on Philips PW-1100 four-circle diffractometer. The number of independent reflections amounts to 693. The structure was determined by conventional three-dimensional Patterson and Fourier syntheses and refined by "block diagonal" matrix least-squres procedures to R = 0.046. This structure can be considered as a layer step type of lattice built up by Ba2+ and (B3O6)3- rings atterna-tively. The anion (B3O6)3- group is nearly planar with its plane perpendicular to the threefold axis which passes through the center of the ring. Each barium atom has seven oxygen neighbors. In comparison with the high temperature form of barium borate, it is shown that the acentric symmetry of the barium cations in this structure changes the electron density distribution of the inorganic conjugated boron-oxygen rings, thereby making principal contributions to the SHG effect.

本文报道了新型信频材料——偏硼酸钡[Ba_3(B_3O_6)_2]低温相的晶体结构。晶体属三方晶系,空间群为C_3~4-R3,取六方坐标系,晶胞参数为a=b=12.532A,c=12.717A,z=6。在 Philips PW-1100四圆衍射仪上收集到独立衍射693个。采用重原子法通过三维帕特逊和三维傅里叶合成测定结构,并用对角矩阵最小二乘法修正至R=0.046。该晶体是一个由Ba~(2+)和(B_3O_6)~3环交错组成的层状阶梯式结构。其阴离子(B_3O_6)~(3-)环基本上是平面状的。基团平面垂直于三次轴;Ba~(2+)近邻有7个氧原子。将此结构与偏硼酸钡高温相比较表明,由于钡阳离子的非中心对称分布改变了阴离子硼氧环共轭基团的电子云密度,这一结构上的变化对该晶体的倍频效应做了主要贡献。

 
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