查询词典 liquid crystals

In this paper we have characterized the structure of various twist interfaces which are composed of (001 ),(011),(111 )-oriented semi-infinite crystals of four face-centered cubic metals Ag, Au, Al, Cu and (001),-oriented semi-infinite crystals of Si respectively with the coincidence site lattice, and calculated their energy with Modified Embedded Atom Method.

本文采用重合位置点阵的方法表征了Ag、Au、Al和Cu四种面心立方金属的(001)、(011)和(111)取向的半无穷大晶体分别与Si的(001)和(111)取向的半无穷大晶体构成的扭转界面的结构，并应用改进嵌入原子法计算了它们的能量。

Based on the transmission characteration of optical fiber and the methods of fabrication colloidal photonic crystals,electric field-controlled method is used to fabricate colloidal photonic crystals with the photonic band-gap in communications wavelength.

基于对光纤传输特性和胶体光子晶体制备方法的研究，提出了用外加电场控制的方法制备光子带隙位于通讯波段的FCC结构的胶体光子晶体，并用光纤系统测试胶体光子晶体的带隙特性。

Unique gold-plated dangling earrings with clear Flatback crystal, removable dollar sign charm set with clear crystals and star charm set in Astral Copper crystals.

独特的镀金悬垂耳环透明的Flatback水晶，可移动的满镶透明水晶的美元符号挂坠和铜色水晶镶嵌的星形挂坠。可拆卸

The results show that the discharge capacity of expanded grid of copper battery is improved obviously at low discharge rates; the EIS research describes that expanded grid of copper electrode has better electrochemistry activity. The scanning electron microscopy images reveal that the sponge Pb crystals of expanded grid of copper negative electrode are smaller at charge state, and the PbSO4 crystals are smaller at discharge state.

结果表明：在低倍率放电情况下，拉网铜板栅VRLA电池可以明显提高电池负极的放电容量；通过EIS研究发现，拉网铜板栅负极具有更好的电化学反应活性；SEM检测结果表明，充电状态下，拉网铜板栅电极中海绵铅结晶颗粒小；放电状态下，拉网铜板栅负极的PbSO4结晶颗粒较小。

The cells full of crystals observed in orient tobacco were verified to be crystal idioblasts. The crystals observed by SEM were multiangle.

研究表明，香料烟株内结晶细胞是一类特化的含晶细胞，细胞内充满晶体，晶体形状似角锥状，质体等被挤到细胞边缘。

Iron oxide magnetosomes contain magnetite (Fe3O4) crystals and iron sulphide magnetosomes contain greigite (Fe3S4) crystals.

如果把一条形磁铁放在附近，细菌就游向吸引罗盘针指向北端的那一极。

In the present work, pale-yellow KLN crystals with high-quality are grown successfully by a modified Bridgman technique for the first time, the crystallizing behavior, defects and properties of KLN crystals are studied also.

本课题首次将坩埚下降法生长技术用于KLN晶体的生长研究，成功地生长出浅黄色、高质量KLN晶体，同时研究了KLN熔体的析晶行为以及晶体缺陷，测试了KLN晶体的电学和光学性能。

TEM observation showed that the morphology of γFe〓O〓 nano-crystals was plate-shaped and Co〓O〓 nano-crystals consisted of small spherical particles and nano-wires.

TEM观察显示γ-Fe〓O〓纳米晶为片状结构，Co〓O〓纳米晶则是由晶态的球形小粒子和非晶的线形小粒子两部分组成。

Crystals are obtained and the crystal packings of these crystals are discussed.

此外，对于制备得到的五种化合物晶体，其分子堆积特点和原子之间的作用力也被详细分析。

Its shown that, on normal incidence, the photonic crystals containing negative refraction materials have wider photonic band gaps which is different from the case of traditional photonic crystals, which have narrow transmission bands.

第四章从麦克斯韦方程组出发，推导了光在单负材料周期性结构的传输矩

Given the language of section 102(2), the Supreme Court's rejection of substantive review under NEPA seems unjustifiable in principle

按照第102条的规定，最高法院否决《国家环境政策法》所规定的实质性复审在原则上似乎是不正当的。

ObjectiveTo explore the effect of variable hip abduction orthosis on children spastic cerebral palsy.

目的探讨髋关节矫形器在儿童痉挛型脑性瘫痪康复中的作用。