The simulation on the aperture used for limiting beam size in front of the sample showed that, smaller the size of the aperture and further the distance from the aperture to the sample, greater the loss of the intensity and more serious the spread of the beam along vertical direction at the sample position which makes the practical sampling volume greater than expected.(211) reflection of the polycrystal α-iron sample is used in the simulation experiments, and both the resulting full-width-at-half-maximum of the diffraction peaks and peak shifts under tensive and compressive strain are in accord with that expected from analytical methods.
用蒙特卡罗模拟方法对中子应力衍射谱仪的设计方案进行了优化研究，提出了一系列可供参考的数据：确定了单色器的位置、尺寸、垂直聚焦单色器在不同起飞角下的聚焦曲率半径和倾角；讨论了第二准直器的尺寸和发散，以及使用第二准直器造成的强度损失；给出了在不同单色器反射面、起飞角、中子波长和第一准直器发散度的情况下样品处的中子注量率，以及多种组合情况下谱仪的分辨率曲线；对限束方孔的尺寸、距离样品远近对强度损失和测量中的影响做了深入研究。
Study on the Gezhen ductile shear zone shows that deformation caused the volume loss of all rocks in shear zone, induced leaching of tectonitic fluids to rocks and also induced the loss of SiO 2 and alkaline in rocks; with the increasing of deformation intense, light REE in rocks decreased, and also the diffraction between LREE and HREE occured.
戈枕韧性剪切带的变形过程中，岩石发生了体积亏损，产生了构造岩流体对岩石的浸滤作用，导致岩石中SiO2和碱质的流失；随变形作用的加强，岩石中轻稀土元素的含量显著降低，轻、重稀土元素间发生了一定的分馏作用。
The effects of reaction temperature on synthesis of SiC-TiC composite ultra-fine powder phase and the impact of loss on ignition, the use of thermodynamic calculations for analysis of reaction process, while the use of X-ray diffraction and scanning electron microscopy by means of synthetic phase of the powder, such as an analysis of morphology.
考察了反应合成温度对SiC-TiC复合超细粉体物相和烧失量的影响，运用热力学计算对反应过程进行分析，同时采用X射线衍射仪和扫描电镜等手段对合成粉末的物相、微观形貌等进行分析。
Furthermore, the effects of Ge-, Ag-, Hg-and Pb-additions on the properties and structure were studied. The technologies for refining of raw materials and glass-melting were studied for the purpose to depress impurities and defects in the glasses which resulted in the extrinsic absorption and scattering loss of optical fibers through changing the conditions of processing and characterized by infrared transmission spectra and scanning electron microscopy. The variations of properties with compositions were studied by density measurements, differential thermal analysis, IR spectra and deliquescence-resistance observation. The probability and methods of fiber-drawing were performed on the selected glasses. The structure of the AsTe-Ge and As-Te-Ag glasses was studied by X-ray diffraction and reverse Monte Carlo computer simulation to understand the effects of Ge-and Ag-additions. The chemical bonding in the glasses was studied by self-consistent-field discrete variational X〓.
通过改变玻璃原料的提纯及熔制工艺条件，结合红外光谱分析和扫描电子显微镜分析，研究了硫卤玻璃的熔制技术，了解引起非本征损耗的因素消除情况；通过密度分析、差热分析、IR分析及抗潮解性能分析研究了玻璃各项性能随组成的变化关系；在此基础上选取合适的光纤玻璃组成，并通过实验探索其成纤性能及适宜的拉纤方法；围绕材料组成—结构—性能之间关系，了解Ge和Ag等元素的引入对玻璃结构和性能的影响，采用X射线衍射分析，求得了As-Te-Ge和As-Te-Ag玻璃的径向分布函数，并与逆蒙特卡洛计算机模拟方法相结合，来认识玻璃中原子排列情况；并采用自洽场离散变分X〓分子轨道法研究As-X-I玻璃的化学键特性。
Tiple screen forward diffraction loss for high base station antenna heights
向绕射损耗，而对较低的基站天线高度则采用基于测量的数据。
In present works, the corrosion mechanism of hot dipping equipment by molten zinc or molten aluminium has been analyzed. Many coating schemes have been designed, such as molybdenum, tungsten, Mo-30W, Co/WC, Fe-Cr-Al, MgO+ZrO_2 and Al_2O_3+TiO_2. Various analysis and testing technologies are adopted to detect the changes of samples after being corroded, including X-ray Diffraction, Electron Probe Microscopy Analysis, Transition Electron Microscopy and weight loss analysis by Analytical Balance. By analyzing the microstructure, phase transformation and weight loss between as sprayed and after-corrosion samples, we find that plasma spraying molybdenum coating and in-situ diffusion Fe-Cr-Al intermetallic compound coating have wonderful corrosion resistance to molten zinc and flame spraying MgO+ZrO_2 coating has wonderful corrosion resistance to molten aluminium.
针对这一问题，本课题通过分析目前国内外耐熔锌及耐熔铝腐蚀防护技术的研究发展现状，同时结合熔锌、熔铝对设备的腐蚀机理，选用了等离子喷涂Mo、W、Mo-30W、Co/WC涂层，原位扩散Fe-Cr-Al金属间化合物涂层，火焰喷涂锆酸镁、Al_2O_3+TiO_2涂层以及固体渗硼层等作为耐熔锌腐蚀和耐熔铝腐蚀涂层进行研究，并通过XRD、EPMA、TEM等分析测试手段，获得试样在熔锌、熔铝腐蚀前后组织形貌、物相结构的变化以及重量变化等实验数据，结果表明，等离子喷涂Mo涂层和原位扩散Fe-Cr-Al金属间化合物涂层具有优良的耐熔锌腐蚀性能，而火焰喷涂锆酸镁涂层具有优良的耐熔铝腐蚀性能。
The Sky-Watcher paraboloidal mirror reflectors and all Dobsonian models feature a four-arm, secondary-mirror bracket with fine supports (0.5mm thick), to reduce diffraction spikes and light loss.
抛物面镜面反射和所有DOB机型采用了四臂中央副镜支撑（ 0.5毫米厚），以减少衍射峰值和减轻光损失。
And the apparent performance composite film, thickness, electrical conductivity, thermal stability and crystalline properties of factors were studied using UV-visible spectrum, infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscope, weight loss Analyzer, X-ray diffraction, the four-probe electrical conductivity and a number of significant gage composite film, and so on the structure and performance characterization.
并对复合膜表观性能、厚度、导电性、热稳定性及结晶性能的影响因素进行了研究，采用紫外可见光谱、红外光谱、扫描电子显微镜、透射电子显微镜、原子力显微镜、热失重分析仪、X射线衍射仪、四探针电导率仪及数显测厚仪等对复合膜的结构和性能进行表征。
Hydrogen pressure loss, X-ray diffraction, scanning electron microscopy and thermoanalysis were conducted to determine the structure and performance of the milled powders.
采用球磨罐中的氢压降、X射线衍射谱、扫描电镜、热分析、吸放氢测试等测试手段研究了不同球磨方式对纳米晶Mg2FeH6储氢材料的合成结果。
The changes of morphology and mass in the process of pretreatment, the morphology and the phase constitution of chemical conversion film formed by stannate were studied using scanning electron microscope, X-ray diffraction and the mass loss method.
利用扫描电镜、X射线衍射和质量损失等手段，研究预处理前后的表面形貌及质量变化和锡酸盐化学转化膜层表面形貌及其相组成，采用盐雾和湿热实验箱检验膜层的抗腐蚀性能。
The changes of morphology and mass in the process of pretreatment, the morphology and the phase constitution of chemical conversion film formed by stannate were studied using scanning electron microscope, X-ray diffraction and the mass loss method. The corrosion resistance of film were studied by salt spay test and damp test.
利用扫描电镜、X射线衍射和质量损失等手段，研究预处理前后的表面形貌及质量变化和锡酸盐化学转化膜层表面形貌及其相组成，采用盐雾和湿热实验箱检验膜层的抗腐蚀性能。
The main physical effects in the laser used for ADI the spectroline's shape, anomalous dispersion effect, frequency pulling effect, the competition effect between lines, wide band dispersion characters of the diffraction grating by the incident of Gaussian light beam, the loss modulation effect at the output window, the parasitic oscillating in other lines, the stability of dualwavelength, the light feed-back into cavity and laser noise etc.
本论文针对CO〓激光线序不易稳定、重复及He—Ne激光（0.633μm）只有一级过长的合成波等问题提出了3.39μm波段和10.6μm波段两种双波长激光器的方案，并提出了以双谱线四频工作体制得到第二级合成波，这样就有可能在粗测到0.2米左右的前提下实现绝对距离的干涉计量。
Because of the small objective distance in the in-column energy filter, the diffraction pattern was usually accompanied by the zero-loss peak. Whatever the sample thickness is, the plural scattering effect must be removed from the EELS spectra obtained by in-column energy filter.
由于Ω型能量过滤器的物距较小，在零峰附近常伴随有衍射点，所以无论样品厚度如何，由Ω型能量过滤器采集的电子能量损失谱必须扣除多重散射的影响。
It is necessary for the design of a microwave communication project to know such parameters as location and height of obstacle, proper arrangement of antenna height, obstacle diffraction loss, ect.
在微波通信工程设计中，需要获得障碍物的位置和高度、最合理的天线高度组合和障碍物绕射损耗等参数，为此论述了微波电路电测方法及技术要求。
Finally, using the diffraction loss model and effectively transmitting antenna height algorithm, we can predict the diffraction loss of the current environment accurately.
最后结合绕射损耗的模型和有效发射天线高度算法，可以较为准确的预测在当前实际环境下的绕射损耗。
It expounds how height loss diagram is acquired and how dates are processed that comprize position of obstruction point, effective height of obstruction point, diffraction terrain factor, effcctive reflection to earth coefficient, position of reflection point, recommended antenna height.
阐述了高度&损耗曲线的取得，及障碍点的位置、障碍点的有效高度、绕射地形因子、有效地反射系数、反射点的位置、推荐天线高度等数据的处理方法。
Through soluting the population inversion density, the relationship between a certain output pulse energy and cavity loss, the necessary minimum diffraction efficiency of Q-switch, the reflectivity of output mirror and so on, are acquired.
通过对调Q反转粒子数密度的求解，获得了调Q激光器输出的一定脉冲能量与腔内损耗、所需最小Q开关的衍射效率和输出镜的反射率等的关系公式。
This A-O Q-swith uses the dense flint glass as the A-O medium. It has an A-O interactive length of 15 mm and the diffraction efficiency is up to 80%, but the insertion loss is only 8%.
该声光Q开关采用重火石玻璃作声光介质，其互作用长度仅为15mm，衍射效率高达80%，插入损耗仅为8%。
The influence of silicon contents on the corrosion behaviors of stainless steel in highly concentrated sulfuric acid was investigated by the methods of weight loss, potentiodynamic anodic polarization, X ray diffraction (XRD), SEM, EPMA and Auger electron spectroscopy (AES).
用失重法、动电位阳极极化、XRD、SEM及EPMA等多种实验方法研究了四种硅含量对不锈钢在高温浓硫酸中的腐蚀行为，结果表明：高硅的加入使不锈钢的耐酸性能显著提高。
And diffraction loss of fundamental mode and higher-order mode that propagate in the cruciform aperture resonator is discussed.
讨论了基模和高阶高斯光束在十字形孔径谐振腔中传输时的衍射损耗问题。