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Inclination Towards Good——An Analysis of and Comparison Between the Characters in the Scarlet Lett
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本文就纳米材料合成工艺如高频等离子体法合成SiN和SiC纳米陶瓷以及合成机理和合成的纳米材料的特性方面的研究作简单介绍.......
用粒度为50-70nm的纳米级SiC粉体与微米级的SiN粉体复合制备SiN-SiC纳米复合陶瓷材料.对纳米SiC含量不同的SiN-SiC纳米复合陶瓷材......
本文介绍了粘土结合碳化硅、SiO结合碳化硅、SiN结合碳化硅和Sialon结合碳化硅等几种碳化材料的特性、生产工艺要点及在锌、铝等有......
采用流延法制备了SiN块体及SiN/Bn层状材料。流延法已经在陶瓷的制备工艺各到了广泛的应用，但是很少用于SiN体系，尤其是水基流延法，用......
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为了解决微电子特别是MEMS(微电子机械系统)器件结构中的氮化硅薄膜的应力问题,本文采用了离子注入的方法来获得低应力的氮化硅,分......
采用气氛加压烧结制备了SiN-TiN(Ni)复合材料,对材料的烧结性能,导电性能及电火花加工(EDM)的状况和机理进行了初步研究.结果表明:......
（★★★★）必做1 在平行四边形OABC中，已知过点C的直线与线段OA，OB分别相交于点M，N，若■=sinθ·■，■=cosθ·■，其中θ∈0，■.......
I The Scarlet Letter was tragic love story. The love story between a clergyman and a married woman in the 17th centur......
Ultra-thin barrier(UTB)4-nm-AlGaN/GaN normally-off high electron mobility transistors(HEMTs)having a high current gain c......
The W-La2O3-Y2O3-ZrO2materials were prepared by vacuum hot pressing sintering process.The microstructure was characteriz......
《立体几何》（全一册）117页第3题（如图1）有这样的结论：cosθ=cosθ1cosθ2若设则该结论可改写为即二面角（A—BC——D）一个而内，从棱上一点......
sina≈tana是数学中的小角度下的一个近似运算.我们知道,在直角三角形中,在保持斜边不变的情况下,a角度越小,其对应的直角边越小,......
本文给出两个三角不等式: [定理一] 设α、β为锐角,n为自然数,则 sin~(n+2)αsin~(-n)β+cos~(n+2)αcos~(-n)β≥1 (1) 当且仅......
针对圆柱物体的外观视觉检测设计了一种360°全景成像装置，通过单视点约束计算确定镜面形状，根据相机景深、分辨率、视场角等约......
高中数学课本第一册三角函数的教材中,给出了求形如:f(x)=A sin(ωχ+φ)(ω>0,A≠0)的函数的周期 T 的一般方法:T=(2π/ω)。“......
于2002年面世的Volvo XC90，在推出之后迅速以7座豪华城市SIN创新的级距设定，确立了自身在豪华SUV市场上的地位，2006年推出小改款车型，......
首先使用正交设计法对SiNx和SiO2膜的PECVD（等离子体增强化学气相沉积）特性进行了研究，分别得到了两种膜的最佳沉积条件。然后使用PEC......
在解答三角函数的问题时,有一种重要的解题策略:把含有多个三角函数的式子化为只有一个三角函数的式子,即化“异名”为“同名”.......
Single nucleotide polymorphisms in the human corticosteroid-binding globulin promoter alter transcri
Corticosteroid-binding globulin(CBG) is a high-affinity plasma protein that transports glucocorticoids and progesterone.......
Alumina Solubility in Na_3AlF_6-K_3AlF_6-AlF_3 Molten Salt System Prospective for Aluminum Electroly
The alumina solubility in the title system within the composition range of KR{m(K3AlF6)/[m(K3AlF6)+ m(Na3AlF6)]} 10%―50......
Experimental investigation on propagating characteristics of sinusoidal unsteady flow in open-channe
A high accuracy experimental system has been established for unsteady open-channel flow.Then 40 experiments were conduct......
DFT Investigation on Spectroscopic Characteristics and Photolysis Mechanisms of α-Phenoxylacetopheno
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In transient left bundle branch block,norm al intra-ventricular conduction subsequently returns,if only1 ......
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Theoretical model of optical fiber secure communication system with chaotic multiple-quantum-well la
Chaotic synchronization of injected multiple-quantum-well lasers of optical fiber system and a theoretical model of opti......
The polycrystalline Sr_9Ca(PO_4)_6Cl_2:Eu has been synthesized by solid state reaction.The reaction condition,the appro......
The correlation matrix, which is widely used in eigenvalue decomposition (EVD) or singular value decomposition (SVD), us......
研究了Si N钝化前利用感应耦合等离子体(ICP)对Al GaN/GaN HEMT表面进行NF3等离子体处理对器件性能的影响.结果表明,运用低能量的N......
Spin-on-glass(SOG),an interlayer dielectric material applied in liquid form to fill narrow gaps in the sub-dielectric su......
基于应变Si/SiGe器件结构,本文建立了统一的应变Si NMOSFET电荷模型.该模型采用电荷作为状态变量,解决了电荷守恒问题.同时采用平......
在很多资料和综合试卷中，经常见到下面一道关于变压器和二极管的题。 ......
在三角函数关系式中,因为 sin2α+ cos2α=1,tanα=sinα/cosα,所以tan2α=sin2α/cos2α=1-cos2α/cos2α=1/cos2α-1,所以co......
研究目的:前期研究表明巨噬细胞表面的α7烟碱型乙酰胆碱受体(Alpha 7 nicotinic acetylcholine receptor,α7nAChR)是青藤碱(Sino......
为实现无交通事故的社会环境,本田提出"Safety for Everyone"的全球安全口号。长期以来,本田身处汽车安全技术研发的最前沿。搭载......
△ABC的外接圆与内切圆半径分别为R,r,证明:sin(A/2)+sin(B/2)+sin(C/2)≥3·(r/R).以上是《数学通报》2009年第2期刊出的1779号问......
PSN-PZN-PZT + x wt.%Cr2O3, x = 0.0-0.9, were prepared by conventional mixed oxide techniques at sintering temperatures o......
W / Cu functionally gradient materials (FGMs) containing 1%La_2O_3 and 1%TiC were prepared using graded sintering under ......
在平时学习及高考中经常碰到已知sinα+cosα的值,求相关的一些问题,若要能准确求出问题的结果,找准角所在范围是很必要的.下面根......
Asymmetric membranes present better separation and service characteristics than the symmetric ones. In our preliminary s......
Fabrication and thermal conductivity of copper matrix composites reinforced by tungsten-coated carbo
Carbon nanotubes(CNTs) were coated by tungsten using metal organic chemical vapor deposition.Magnetic stirring was emplo......
sinα+cosα与sinαcosα常出现在各类三角问题中,解决这类问题的关键是灵活运用sinα+cosα与sinαcosα的关系.基本关系:(sinα+......
由平方关系sin2α+cos2α=1不难得到(sinα±cosα)2=1±2sinαcosα.它揭示了sinα+cosα、sinα-cosα、sinαcosα三者之间的密......
