查询词典 replica grating

Compare with tunable filter detection technique, the wavelength measurement technique using tunable source is analyzed theoretically. We design a kind of all-fiber sensing interrogation system, by using long-period fiber grating as edge filter to interrogate the sensing signal of the FBG sensor. The wavelength resolution of the sensing measurement is 0.05nm.A novel FBG Bourdon tube sensor has been constructed, utilizing the pressure mechanic amplify function of Bourdon tube. The measured pressure sensitivity is two orders of magnitude higher than a simple monomode fiber with an in-fiber grating. Especially the pressure sensitivity of the sensor can be determined by changing the parameters of the cantilever beam. Adopting polymer package technique, we coat fiber Bragg grating by using polymer with different mechanic properties.

利用波登管对于压力的机械放大作用，研制了一种新颖的光纤光栅波登管压力传感器，将FBG的压力灵敏度提高了两个数量级，特别是这一传感器的压力灵敏度的大小可以通过改变悬臂梁自身的参数灵活控制；采用聚合物封装技术，将FBG封装于具有不同力学特性的有机聚合物基底中，利用基底的带动作用，将FBG对压力的灵敏度分别提高了20倍和31.7倍，由于我们采用了特殊的工艺，封装后的FBG不出现任何光栅啁啾；在成功封装的基础上对封装光栅的蠕变效应、FBG与封装材料之间的防滑处理等进行了实验研究；设计了外加圆柱形铝管的聚合物封装光纤光栅，将FBG的压力灵敏度提高了1430倍，可用于对微小压力变化的精确测量。

The replica material used in this study is Polydimethylsiloxane. The enlargement of replica compared to original size is 2.34%. Since PDMS is transparent, a layer of metal should be sputtered on its surface to measure optical characteristic, however the accuracy will be affected by the metal coated. The result assumes that Sternocera aquisignata, Chrysochroa rajah and Catoxantha opulenta may have one-dimensional photonic crystal structure. The fabrication of quasi-structure with elytra from Buprestid can promote the applications in the field of photonic structure and optical components.

经PDMS翻印的结果，最小仅增加原始尺寸的2.34%，翻印结果良好，但因翻印结果需镀上一层材料，使得镀上的材料严重影响结构的反射率，造成结构不同反射率也类似的情形，将结构刻画在不需镀金的材料上，将可防止镀上材料影响反射率的问题，并将所制成之结构用於防伪、光子结构研究和光学元件上。

I pictured my ghost, the replica of my carcass, sauntering and pondering with the replica of my dead soul, and then decided for the other path.

我想到自己的鬼魂，我身体的复制，将带着我已死灵魂的复制思考漫步，然后选择了另一条道路。

A global replica is the typical replica from which you can create all other types of replicas.

全局副本是一种典型的副本，通过它，可以创建所有其他类型的副本。

To sum up, according to the replica management requirements of data grid, this dissertation proposed a suit of dynamic replica management service model, as well as a series of corresponding algorithms.

综上，本文针对数据网格副本管理的需求，提出了一种动态副本管理服务模型及相关算法，为提高数据可用性和优化性能提供了一种较好的解决方案。

Replica grating (i.e., optical elements), unmouted

重摹光栅，未装配

According to the special structure of the tilted fiber Bragg grating, the effect of the tilted angle θ on reflection spectrum of tilted fiber Bragg grating was studied by using the couplemode theory and transfer matrix.

根据倾斜光纤Bragg光栅的结构特点，利用耦合模原理，运用传输矩阵法，模拟分析了倾斜角度对光纤Bragg光栅反射特性的影响，并用实验对模拟结果进行了验证。

During the experiment, the circular grating with 1200 grating lines was adopted, and the precision of the twist angle (less than 0.001°) was acquired while the rotational speed of the principal axis is within the range of 0～1500r/min.

实验中，测量系统采用1200条刻线的圆光栅，在主轴转速为0～1500r/min的范围内测量其扭矩，扭转角精度小于0.001°。

The main works include: In this thesis, we use Finite Difference Time Domain method to study the relationship between diffraction efficiency, angular dispersion and grating constant, to discuss how the grating figure influence the diffraction efficiency, and to research the frequency spectrum characteristic.

主要工作包括：本文分别在垂直入射和自准直入射（光垂直于光栅刻槽面入射）情况下，采用时域有限差分方法，利用商业数值计算软件OptiFDTD对二维闪耀光栅进行了矢量电磁场数值计算，研究了光栅的衍射效率和角色散随光栅常数的变化情况，研究了光栅形状对光栅衍射效率的影响，还讨论了各种光栅的频谱特性。

Based on the temperature-dependent complex dielectric constant of Indium Antimonide, an InSb-dielectric-InSb plasmonic waveguide structure with the grating is proposed. At the frequency of 1 THz, a directional beam is obtained, and its radiation direction can be controlled by changing the temperature difference between the grating structures on each side.

本文根据锑化铟材料在THz波段下复介电常数对温度的响应特性，采用了带有光栅的锑化铟-介质-锑化铟的表面等离子体波导结构，实现了1THz频率光束的准直出射，并能够通过调整结构两侧光栅的温度差来控制出射光束的角度。

Mr. Putin said there were signs of genocide against the Ossetian people.

普京说，有迹象表明对南奥塞梯人进行了种族清洗。

What I'm trying to say, Tristan is...

特瑞斯坦。我想说的是。