晶胞

There are 8.6%~10.91% foreign matter in the sphenes, in which radioactive elements of strontium, cesium and uranium range from 4.26% to 4.58%. The change of structural cell parameters of sphenes is still very little,Δa=-0.0009 nm~0.0041 nm,Δb=0.0018 nm~0.0004 nm,Δc=0.0002 nm~0.0048 nm,Δβ=-0.10°~0.09° with high crystallinity of 99.27%~96.46%. Though, the age of sphene from the Fenghuang Mountain is about 1000 Ma, and experienced 775 Ma~1758 Ma geological evolvement and alpha decay, its crystallinity only decreased 3%, and its crystal shape and structure are still fine, indicating that sphene is of good ability to solidify radioactive elements. Therefore, sphenes are ideal minerals for solidifying nucleus waste.

通过对北祁连牛心山变质杂岩体中榍石(775Ma)和山西凤凰山花岗岩中榍石(1758Ma)的XRD及EDS等测试与研究，结果表明：两地榍石的杂质元素质量分数高达8.6%~10.91%，放射性核素锶、铯和铀的质量分数达4.26%~4.58%；晶胞参数的变化极小，△a=-0.0009nm~0.0041nm、△b=0.0018nm~0.0004nm、△c=0.0002nm~-0.0048nm、△β=-0.10°~0.09°，结晶度仍高达99.27%~96.46%，榍石经过10×10^8a的地质作用，结晶度仅减少了3%，显示榍石固化放射性系列核素的能力较强，虽经历了约775Ma~1758Ma的复杂地质演化及其所含放射性核素的衰变作用，其晶体结构完好，稳定性极高，是值得期待的理想核废物固化矿物。

This paper deals emphatically with the genetic mineralogical characteristics of amphibole, an important rock-forming mineral extensively-distributed in ophiolites of Shangnan-Danfeng are...

本文着重论述了商丹地区蛇绿岩中广泛分布的主要造岩矿物之一，角闪石的主要特征组份、微量元素、晶胞参数、阳离子占位度等成因矿物学特点。

Analyses of quenched nm products revealed that the nepheline was completely transformed into NaAlSiO4 with the calcium-ferrite-type structure at 23 GPa and 1500℃ In combination with previous results, the calcium-ferrite-type NaAlSiO4 can exit under the conditions of deep lower mantle and it may be the important host phase for sodium and aluminium in the deep lower mantle. With the change of temperature and pressure, the crystal parameters will change, though the ranges are limited.

结合前人的研究成果可以认为：型NaAlSiO4在地慢深部可以稳定地存在，并对Na、Al在深部的赋存具有重要意义；随着温度压力条件的变化，CaFe2O4型NaAlSiO4的晶体学参数（晶格常数、晶胞体积和计算密度）发生变化，但变化的幅度不大。

The result obtained form wide angle X-ray diffraction proves that the crystallite structure in the blend is still triclinic as the same as PET, and the cell index has no change.

用高斯和柯西混合函数对WAXD结果进行分峰处理后证实：共混物中晶体结构与PET相同，仍为三斜晶系，晶胞参数未改变。

The reactions of pyridine-2-carbaldehyde semicarbazone with transition metal Ni(II,Cosalts afford two pyridine-2-carbaldehyde semicarbazone transition metal compounds.

配合物[CoL2]·(ClO4)2·H2O(3)，分子式C14H18Cl2CoN8O11，Mr=604.19，属三斜晶系，空间群P-1，晶胞参数：a=9.984(3) A， b=11.082(4) A， c=12.196(5) A ，Dc=1.769Mg/m3，α=112.954(4)°，β=110.050(4)°，γ=94.017(3)°，V=1134.4(7) A3， Z=2，μ=1.067mm-1， F(000)=614，结构偏离因子R=0.0501 和ωR=0.1028，配合物(3)的中心金属离子采取六配位的变形八面体。

The crystal structures have been determined by X-ray diffraction method, which show that the new complex [Co2-Co(2)(0H2)s] belongs to the bridging binuclear complex and the system of monoclinic with space group P211~,unit cell parameters a8.3850(10)A, b=27.386(4) A, c=9.610(2) A,~=98.280(10)~,V=2 183.8(6) A3 , Z=4, Dc=l.746Mg/m3,~i =l.597mm, F(000)=1168, Final R=O.0253 and wR=O.0610 S1.009 ,The two Co2~ are in distorted octahedrons. The part of [2Co] possess an approximate D2d symmetry, while the part of [OCo(2)(0H2)5] has an approximate C2 symmetry.

结构分析表明配合物(1)[Co1，(DPC2-Co(2)(OH2)5]是一个未见报导的桥联双核配合物，属单斜晶系，空间群为P2_1／c，晶胞参数：a=8.3850(10)A，b=27.386(4)A，c=9.610(2)A，β=98.280(10)A，V=2183.8(6)A~3，Dc=1.746Mg／m3，Z=4，μ=1.597mm-1，F(000)=1168，结构偏离因子R=0.0253和ωR=0.0610，吻合因子S=1.009，Co_(1)和Co_(2)的配位多面体皆为扭曲正八面体，[_2Co_(1)]部分具有近似D_(2d)对称性，[OCo(2)(OH_2)5]部分具有近似C_2对称性。

This article mainly divides into three parts, The first part is the albite jade characteristic, uses traditional the gemology method conducts the research to the albite jade physical property as well as the structure, carries on the electron probe analysis to its chemical composition, and the discussion of its mineral component\'s chemical composition change carries on the SPSS statistical software; uses X powder crystal diffraction to determine its lattice parameter, mineral constituent\'s crystal structure conducts the research to the albite jade, carries on the analysis to the feldspar degree of order, and carries on the discussion to the albite jade\'s origin. The above method each other confirms mutually, confirms the data reliability.

本文主要分为三部分，第一部分为钠长石玉的性质，采用常规的宝石学方法对钠长石玉的物理性质以及结构构造进行研究，利用电子探针分析对其化学成分进行分析，并运用SPSS统计软件对其矿物成分的化学成分变化进行探讨；采用X粉晶衍射测定其晶胞参数，对钠长石玉中矿物组成的晶体结构进行研究，对长石的有序度进行分析，并对钠长石玉的成因进行探讨；上述方法彼此相互验证，以证实数据的可靠性。

Raman spectra indicate a lower density of phonons of nano-samples than that of a bulk one.

在Raman谱上观察到的散射峰强度随颗粒度减小而下降，即声子密度下降的效应，也可以归功于表面态和界面态上未能形成完善的晶胞，晶格振动的格波难以形成。

A=? A 30kv electro probe acted to a hexagonal crystal, the following pattern was obtained for [0001] crystal zone (probe‖c axis,), R is 7mm, L=800mm, lattice parameter a=?

111， 2-220 2 用 30kv 电子束作用于六方晶体，得到下列沿 [0001] 晶带入射的衍射图， R is 7mm， L=800mm，试求晶胞参数

The largest energy difference of the studied PMN supercell models was about 0.74 a.u.(1940 kJ). Pb2＋ lattice distortion may be the main factor for the PMN system deformation. Less MgO6 is favorable for Ti substitution of Nb.

kJ； Pb2＋离子结构框架的形变是PMN晶格发生形变的主要因素；在不考虑被替换离子电荷差异的情况下， MgO6含量越少越有利于Ti离子替换Nb与晶胞的形变。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。