查询词典 seed crystal

Beginning with the discovery of liquid crystal, this paper introduces the categories and characteristic of liquid crystal, and liquid crystal will be inevitably used display field ---- namely photoemission.

本文将从液晶的发现开始，介绍液晶的种类和特性，及其用于显示技术的必然性――即电光特性，全面论述液晶显示技术的历史、特点及其发展趋势和最新的技术动态。

The invention relates to a light pumping system for all-solid laser, particularly a light pumping system for disc type laser, comprising heat sink, laser crystal, optical fiber, plane reflector, a first concave reflector, a second concave reflector, and a third concave reflector, and adopting a structure that the plane reflector is between the optical fiber and the first concave reflector, to make the LD and laser cavity on the same side of the laser crystal, thus reducing the packaged size of the laser; the invention fixes the plane reflector on the heat sink to reduce the inclined incident angle of the pumped light beam, thus the pumped light can be fully absorbed, and the invention solves the problem of pumping efficiency and largely reduces the bulk of the laser, beneficial to the all curing of the product and ensuring the cooling requirement of the laser crystal.

本发明涉及全固体激光器的光泵浦系统，特别是一种盘式激光器的光泵浦系统。包括热沉1、激光晶体2、光纤3、平面反射镜4、第一凹面反射镜5、第二凹面反射镜6、第三凹面反射镜7，本发明采用平面反射镜位于光纤与第一凹面反射镜之间的结构，使LD和激光腔位于本发明激光晶体的同一侧，从而减小了激光器的封装尺寸；本发明将平面反射镜固定在热沉上，使泵浦光束斜入射角减小，泵浦光则能充分吸收，为此，本发明解决背景技术采用第一凹面反射镜使泵浦光束斜入射角过大引起的像散，泵浦光斑变形引起泵浦效率降低问题，使得本发明可选用大面积半导体制冷器，避免使用水冷，则激光器的体积大大减少，有利于产品的全固化，保证了激光晶体的散热要求。

According to the transnational periodically symmetry of crystal plane in its space,the author introduce the Thomas-Fermi equation in crystal planar channeling electric fields;then calculate the electric fields of single crystal Si(110)and its critical angle.

根据同一晶向的晶面具有平移周期对称性，将托马斯费米方程引入晶体的平面沟道中求解Si(110 )平面沟道内的电场；然后把求得的结果用于计算平面沟道临界角。

Because the liquid crystal material is birefringent, light passing through one polarizing filter is rotated by the liquid crystal helix as it passes through the liquid crystal layer, allowing it to pass through the second polarized filter.

因为液晶材料是双折射，光线穿过一个两极化的过滤器是旋转液晶螺旋，因为它通过液晶层，允许它通过第二偏振过滤器。

It indicates that the different parts of the cattle-egg stone samples in different colours all mainly compose of pyrophyllite, coexisted by two kinds of polytype of monoclinic and triclinic pyrophyllite, and the average crystal structural formula is Al4.04 Si7.89 Al0.11O204. The aggregation of pyrophyllite arranges with no direction, and the crystal size of the single pyrophyllite crystal in the weathering skin is a little bigger than that in the basal part.

结果表明，不同颜色牛蛋石样品的不同部位皆以叶腊石为主要成分，并以叶腊石的单斜和三斜两种多型共存，其平均晶体结构化学式为Al4.04[Si7.89Al0.11O20]4；其叶腊石集合体呈无定向排列，风化皮中叶腊石单晶的粒度略大于基体中的。

It is found that there is a mineral association, micro-crystal muscovite and phengite, in this deposit. The mineral assemblage contains about 80% micro-crystal muscovite and about 20% phengite. Their crystallinity is very high and their polytype is 2M1. Both of them are dioctahedral because the d and b of micro-crystal muscovite and phengite are 0.1502 nm, 0.9012 nm and 0.1505 nm, 0.9030 nm, respectively. For their d and b are larger than those of common muscovite, the reason why Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+) are high in the ore is that Al(superscript 3+) in the octahedron is replaced by Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+), and this is a phengite series mineral association formed through isomorphic replacement.

该矿物组合中的微晶白云母和多硅白云母结晶度高，多型为2M1，其含量分别为80%和20%左右；二者都属二八面体型白云母类矿物，但d060和b值偏大，微晶白云母的d060=0.1502nm，b=0.9012nm，多硅白云母的d060=0.1505nm，b=0.9030nm；微晶白云母矿铝含量较低、铁镁含量较高，其原因是白云母晶体铝氧八面体中的Al离子被Fe、Mg等离子所取代，这一矿物组合是通过矿物类质同象作用所形成一种多硅白云母系列矿物。

The mode field of photonic crystal fiber structured with hexagon symmetry hole cladding was analyzed by coupled-mode, and the effective indexes of base mode of different wave length were got. The characteristics of this photonic crystal fiber grating were computed and simulated by coupled-mode method and transmission matrix method. Moreover, the differences were compared between conventional fiber grating and photonic crystal fiber grating on their reflection spectrum and delay.

利用多极法对包层空气孔为正六边形对称结构光子晶体光纤的模式场进行了分析，计算出不同波长下基模的有效折射率，结合使用模式耦合理论和传输矩阵法对基于光子晶体光纤的布拉格光栅特性进行了计算和仿真，对比了常规单模光纤所成光栅与相同光栅周期的光子晶体光纤布拉格光栅反射谱及时延特性之间的差异。

Crystal qicai raised ultraviolet VFX, that is, fast-curing properties of the Crystal, the ink holdout colorless, unscented, non-volatile, cured yellow screen leakage membership card after line non-proliferation, there are the obvious Crystal, having raised emergent, smooth and join qicai foil powder, with extremely colourful, in the light, people from different angles to watch, there will be an honour for the extraordinary variety of art refringence for free!

水晶七彩瘪下殊效，即诳骗紫外线飞快固化水晶油不朱的共性，其不朱层无色透明、无气息、不挥发，固化后不泛黄，丝网漏会员卡制息后线条不清除，有水晶般的明不隐瘪下突现，晶莹剔透，平滑细致，参增七彩箔粉后，又明灭着极其灿艳的色彩，在光芒照射下，人们从差别的角度观察，会有不别致的耻辱幻变反射般的艺术吃苦。

Product main úúú have natural tourmaline, blonde crystal, miscellaneous fat crystal, red pomegranates,é, white crystal, citrine, topaz, violet topaz, amethyst, jade Dongling, purple agate, red agate,, Johor jade, rose quartz, even stone beads, etc., even shaped, non-stereotyping, have necklaces, bracelets, carvings, shell carving, carving spar, miscellaneous pieces of sculpture, tag, angle and other products.

产品主要有天然碧玺、金发晶、杂发晶、红石榴、绿幽灵、白水晶、茶晶，黄晶，紫黄晶、紫水晶、东陵玉，紫玛瑙、红玛瑙、虎眼石、新山玉、粉晶，什石等圆珠，什形，不定型，有项链、手链、雕刻品、贝壳雕刻、晶石雕刻，杂件雕刻，吊牌，角度等系列产品。

Phase I of the project the company has invested 56 Units crystalline solar single crystal pulling furnace production, the second phase is expected by the end of 2008 to invest 56 Units crystalline solar single crystal pulling furnace, for a total of 112 Units crystal pulling furnace production, from the production of single-chip - battery film - Packaging, solar power generation as well as street lamps, such as system integration projects.

公司第一期工程已投资56台太阳能单晶拉晶炉生产，第二期有望在08年底投资56台太阳能单晶拉晶炉，共计112台炉生产拉晶，从生产单晶片——电池片——封装发电电池板以及路灯等系统一体化工程。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"