查询词典 crystal

By analyzing the working characteristics of the laser crystal, the temperature field and thermal distortion field analytical expressions of Nd:GdVO4 crystals with super-beam end-pumped were obtained by the equation of aeolotropy heat conduction, which considered heat conduction aeolotropy characteristic of Nd:GdVO4 crystal.

通过激光晶体工作特点分析，考虑到Nd：GdVO4 晶体热传导各向异性的特点，采用各向异性传热的Poisson 方程，得出了超高斯光束端面泵浦Nd：GdVO4 晶体温度场以及热形变场的一般解析表达式。

And the width with unoccupied place belt of crystal of phonon of this kind of form following branch and central frequency can follow phonon crystal sheet of appearance of geometry of unit of the construction inside afterbirth change and change.

而且这种准分形声子晶体带隙的宽度及中心频率会随声子晶体单胞内结构单元几何外形的改变而改变。

In the thesis, we use R-Soft program to find the appropriate photonic crystal structure which can replace laser cleaved mirror and provide high reflectivity as high as 71% for 980 nm laser. Furthermore, we replace mirror with air bridge mirror in order to prevent light from escaping below photonic crystal. Then we observe whether it can provide higher reflectivity.

本论文利用R-Soft软体来对二维光子晶体做模拟，找出适当的二维光子晶体排列，能对於波长980 nm雷射提供高的反射率，以使光子晶体能取代一般的雷射的劈裂镜面，制作反射率高达71%的雷射镜面，另外，更进一步将镜面改为空桥式镜面，以避免光从有限深光子晶体下方散逸，来研究是否能提供更高的反射率。

The specimens sintered under air atmosphere appear the obvious layering phenomenon, on the whole,and which can be divided into the surface protection layer, the center layer and the non-oxidized layer,SiAlON phase comes into being at about 1550℃,the crystal shape of them is columnar; The specimens sintered carbon reduction atmosphere have no obvious layering phenomenon, the formation temperature of SiAlON is about 1600℃, the crystal shape of them is acicular,fibriform or anomalous.

氧化气氛下，烧成的试样出现明显的分层现象，大致上可以分为表面保护层、中间层和非氧化层，SiAlON相的形成温度约在1550℃左右，多呈柱状；还原气氛下，试样无明显的分层现象，SiAlON相的形成温度约在1600℃左右，多呈针状、纤维状或不规则状。

Kaolin, one of inorganic material, is composed of more parallel crystal layers of octahehedrdal alundum and crystal layers of tetrahedral silica. Rasicals K-O· are formed hydroxyl by initiator. On the surface of octahedral alundum.

高岭土是由许多平行的铝氧八面体晶层和硅氧四面体晶层组成，铝氧八面体的OH在引发剂作用下可形成自由基K-O·，然后可引发丙烯酸-丙烯酸钠进行接枝聚合。

The results of IR and XRD for ground cement components show that grinding aids accelerate breakage of chemical bonds especially of Si—O bond in C〓S mineral, enhance crystal lattice distortion, crystal defect and amorphism, thereby enhancing activity of ground materials.

助磨剂作用下磨细物料的XRD、IR分析结果表明：助磨剂加剧了物料的晶格畸变、晶格缺陷及无定形化，加速了物料结构中化学键的破坏，尤其是C〓S矿物中Si—O键的断裂，从而增加物料的反应活性。

Over the years I have been a Amoy crystal, I know this world there are countless colorful crystal.

这些年来我一直是一位淘晶者，我知道这世界上有无数色彩缤纷的水晶。

Anethole accounted for 82.65% of the whole oil. Selective isolation of anethole form the volatile oil was carried out using an inclusion crystalline method with 1,1,6,6- tetraphenylhexa- 2,4-diyne-1,6-diol inclusion complex with anethole . The crystal structure of the inclusion complex was determined by IR, 1^H NMR and single crystal XRD techniques.

采用包结结晶方法对小茴香挥发油中的对-丙烯基茴醚进行了选择性分离，以1，1，6，6-四苯基-2，4-已二炔-1，6-二醇作为主体分子，小茴香挥发油中的对-丙烯基茴香醚作为客体分子，D.D选择性地与之形成超分子包结物晶体。

In order to modify the deviation angle of ultraviolet polarizing prism of iceland crystal and barium fluoride, a new design was given by changing the structure angle of the iceland crystal.

为了修正紫外偏光镜透射光束偏离角，提出了一种新的设计思路，通过改变冰洲石一端的结构角来实现透射光束无偏离。

The modification occurred in crystal lattice and the restoration effect of annealing are discussed by analyzing the intensity, width and angle of the X-ray diffraction peaks. The H〓 concentration and related structural information are deduced by the evolution of OH〓 absorption spectra with annealing, which offers the experimental proof for further discussion on annealing. The disappearance of the OH〓 absorption peak at 3300cm〓 after annealing indicates that some H〓 of high concentration diffused further into the substrate and the crystal phase changes accordingly.

根据质子交换波导退火前后在OH〓吸收峰特征的变化，推断波导层H〓浓度及相关的结构信息，并对进一步分析退火机制提供了实验依据；由于3300cm〓〓处的吸收峰代表的是立方钙钛矿的HNbO〓结构成分，因此退火后该峰的消失确实说明高浓度区域的H〓继续向波导深度迁移的事实，同时波导区的晶相成分也发生变化。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。