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石英
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  quartz
    Adhesion between UV-cured Coating and Quartz Optical Fibre and Its Influence on Transmission Loss
    UV固化涂料与石英光纤的附着力及对传输损耗的影响
短句来源
    ADSORPTION OF SODIUM OLEATE ON QUARTZ AND FELDSPAR
    油酸在石英与长石表面的吸附
短句来源
    The floating-zone melting was improved by using the quartz tube as the carrier of melting, and the <110>oriented Pr0.15 Tb0.3Dy0.55Fe1.8 rod was prepared. The magnetostriction along <110>of Pr0.15 Tb0.3Dy0.55Fe1.85 rod is measured.
    利用石英管作为熔体的栽体对区熔法进行了改进,并采用谊方法制备出<110>∠虻腜r0.15Tb0.3Dy0.55Fe1.85棒材,沿棒材的<110>较蚪写胖律焖醯牟饬?
    The 0.1BiFeO3-0. 9SrBi2Nb2O9, thin films were prepared on quartz substrates by the pulsed laser deposition technique. The structure and morphology of the samples were characterized by X-ray diffraction and a tomic force microscopy.
    采用PLD方法在双面抛光的石英基片上制备出均匀透明的0.1BiFeO3-0.9SrBi2Nb2O9薄膜,用 XRD方法测得了薄膜的结晶性能。
    Properties of 2.5D Braided Quartz /Phenolic Composites
    2.5D石英/酚醛复合材料的性能研究
短句来源
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  silica
    Study on the Properties of Carbon Fiber Reinforced Fused Silica
    碳纤维补强增韧熔石英性能研究
短句来源
    A Study on Properties of Short Carbon Fiber Reinforced Silica Glass Matrix Composite
    短碳纤维增韧石英复合材料性能研究
短句来源
    Effect of solvent on impregnation process of silica/ phenolic composite
    溶剂对石英/酚醛复合材料浸润过程的影响
短句来源
    Studies on competitive adsorption of phenolic resin-ethanol system on silica fiber surface
    酚醛-乙醇体系在石英纤维表面吸附行为研究
短句来源
    Investigation on Solvent Effect on Silica Fiber/Phenolics Composites Produced by RTM Solution Impregnation Process
    溶剂对RTM石英/酚醛复合材料溶液浸润过程影响研究
短句来源
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  quartz powder
    Research on Spherical Quartz Powder: Electronic Grade, Super Pure and Super Fine
    高纯超细电子级球形石英粉研究
短句来源
    Study on preparating nanometer quartz powder with mechanical method
    机械法制备纳米石英粉体研究
短句来源
    DISCUSSION ON FEASIBILITY OF THE PREPARATION OF NANO-SCALE QUARTZ POWDER BY HIGH ENERGY BALL MILLING
    高能球磨法制备石英纳米粉的可行性探讨
短句来源
    TEST DISCUSSION ON MECHANICAL MANUFACTURE OF NANO-SIZED QUARTZ POWDER
    机械法制备石英纳米粉技术的试验探讨
短句来源
    Thirdly, the weight and threshold of BP neural network model was optimized by genetic algorithm(GA), which has stronger macroscopic search and global optimization property, based on BP network model of the preparation of superfine quartz powder. This model is named GA-BP, and improves the generalization capability and the parameters forecast precision of BP network model, and was proved to be correct by both theoretical analysis and experiment.
    再次,本文以粉石英制备的BP网络模型为基础,利用遗传算法(GA)较强的宏观搜索能力和良好的全局优化性能,对BP网络模型的权值和阈值进行优化,极大地提高了BP网络模型的泛化性能和参数预测精度,将经过GA优化后的BP网络模型简称为GA-BP网络模型。
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  “石英”译为未确定词的双语例句
    The mechanical properties of the composites was improved by the introduction of Si_3N_4 panicles.
    结果表明,Si_3N_4颗粒对石英基体起到了较好的补强作用;
    The microwave attenuation measurement (insertion loss) was carried out in 8.2- 12.4 GHz (X-band).
    测试了不同体积含量MWCNTS/石英复合材料在8.2- 12.4GHz(X波段)的电磁波衰减性能,即插入损耗。
    Flexural Property Testing for 2.5D SiO_2 Fiber-reinforced-SiO_2 Composite
    2.5D石英纤维织物增强二氧化硅基复合材料弯曲性能测试研究
短句来源
    Fabrication of Al-based silicon-fiber composite material
    Al基复合石英光导纤维材料的制备方法
短句来源
    Application of fiber-optic pin to nonmetallic shock experiments
    石英光纤探针在非金属材料冲击实验中的应用
短句来源
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  quartz
The PI solutions were micro-contact printed with the elastomeric PDMS replica on quartz slides.
      
Good surface-relief-grating structures were formed on the quartz slides.
      
The quartz slides covered with surface-relief-grating polymide (PI) films were then assembled into liquid crystal (LC) cells.
      
Diagnose Parameters of Plasma Induced by Femtosecond Laser Pulse in Quartz and Glasses
      
Electron plasma induced by a focused femtosecond pulse (130 fs, 800 nm) in quartz, fused silica, K9 glass, and Soda Lime glass was investigated by pump-probe technology.
      
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  silica
Preparation and Evaluation of 3,5-Dinitrobenzoyl-Bonded Silica Gel Stationary Phase for HPLC
      
In this paper, a new preparation method of 3,5-dinitrobenzoyl-bonded silica gel stationary phase (DNB) for HPLC was developed by using N-(β-aminoethyl)-γ-aminopropyl-methyldimethoxy silane as coupling reagent.
      
The samples were extracted with methanol-water (volume ratio), The extracts were cleaned up with a column of silica gel.
      
Water-borne raspberry-like PMMA/SiO2 nanocom-posite particles were prepared via free radical copolymerization of methyl methacrylate (MMA) with 1-vinylimidazole (1-VID) in the presence of ultrafine aqueous silica sols.
      
The average particle sizes and the silica contents of the nanocomposite particles were in the ranges from 120-330 nm and 15%-20%, respectively.
      
更多          
  quartz powder
At the phase angles between 0.5° and 3.0°, the polarization for quartz powder with 10-μm particles is almost constant.
      
To study the inhibitory effect of oxymatrine (OM) on quartz-induced secretion of TNF-α in the fibroblast proliferation, a given amount of quartz powder and OM of different concentrations were put into the media of pure culture containing macrophages.
      
For example, fast saponification reactions as well as long lasting adsorption reactions of NaOH on quartz powder were recorded.
      
A single crystal of plagioclase was surrounded by quartz powder and water.
      
An investment based on hard plaster loaded with fine-grained quartz powder and good chemical removability was investigated.
      
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The "operation effects" resulted from various adhesives were quantitatively evaluated during measuring the internal friction and modulus defect of low damping specimens by Marx-method. It was observed that the background of internal friction for some weak adhesives, e. g., phenyl salicylate, water glass mixture, etc. seems to be neither negligible nor constant value which is dependent on such factors as their temperature, thermal stress, time, dryness and strain amplitude, similar to that of dislocation damping....

The "operation effects" resulted from various adhesives were quantitatively evaluated during measuring the internal friction and modulus defect of low damping specimens by Marx-method. It was observed that the background of internal friction for some weak adhesives, e. g., phenyl salicylate, water glass mixture, etc. seems to be neither negligible nor constant value which is dependent on such factors as their temperature, thermal stress, time, dryness and strain amplitude, similar to that of dislocation damping. Two resonant peaks were observed for high temperature thermospalled adhesives with cracks. The internal friction measured at an anomalous resonant peak with slightly higher frequency decreases with increasing of the strain amplitude or the exciting time at high amplitude and increases with aging under lower amplitude. Peaking effects were found on the plot of internal friction vs strain amplitude or time when the resonant frequency of anomalous peak closed to the normal one. The hysteresis loops were observed on the plots of resonant amplitude vs frequencies. In certain combination of non-linear resonant hysteresis loop with aging effect, the almost periodic jumps of the repeatable amplitude of specimens may be presented. The aforementioned phenomena had vanished by using a high temperature and high strength adhesive, but the cracking of quartz dumb bar and plastic flow of specimen undergone by the thermal stress. An approach to its applicability and improvement has also been attempted.

定量研究了Marx法测量低内耗试样内耗及模量亏损时各种粘结剂引起的所谓操作效应。对于水杨酸苯酯,水玻璃混合剂之类弱粘结剂所造成的背景内耗既不能忽略也不是常数,它与粘结层温度、热应力、时间、干燥程度和应变振幅等因素有关。经过高温热循环,粘结剂中出现徽裂缝时呈现双共振峰。在稍高频率的反常共振峰所测得的内耗,随应变振幅或大振幅激发时间的增加而减小,并且在小振幅时效中增大。当反常共振峰频率与正常共振峰靠近时,在内耗-振幅或内耗-时间图上呈现峰值效应。观察到各种共振振幅-频率滞后回线,在一定非线性回线和时效场合下观察到可重复的试样振幅的概周期跳动。采用高温高强度粘结剂后,上述现象均消失,但是热应力使石英传递棒开裂或试样范性变形。分析了Marx法的适用范围及改进途径。

Objective.Using CZ method,the growing silicon monocrystals are always accompanied by increasing carbon.In this respect,the mechanism of carbon increasing has not been perfectly clarified and proved theoretically and experimentally so far,even though there are already some explanations.This article is written with the intention to discuss the carbon contamination mechanism based on experimental investigations about suppressing carbon contaminant and thcrmodynamic analysis so as to make an approach to the the...

Objective.Using CZ method,the growing silicon monocrystals are always accompanied by increasing carbon.In this respect,the mechanism of carbon increasing has not been perfectly clarified and proved theoretically and experimentally so far,even though there are already some explanations.This article is written with the intention to discuss the carbon contamination mechanism based on experimental investigations about suppressing carbon contaminant and thcrmodynamic analysis so as to make an approach to the the production of low-carbon monocrystal silicon.Thermodynamic analysis and experiments show that the carbon contained in silicon crystal comes mainly from CO due to the reaction between quartz crucible and its graphite suppotter and that between oxidative components in atmosphere (e.g.O2 and SiO etc) and graphite wares.Amounts of carbon contaminants in silicon crystal caused by these two reactions are about the same.Taking the form of CO,carbon comes into melted silicon.In test,surfaces of graphite ware were coated with SiC,Mo,ZrO2 or pyrolytic graphite and the quartz shield was replaced by a graphite one,thus providing 1~3×10-2 torr vacuum in furnace.As raw material,300g polysilicon was put into furnace for the growth of monocrystals by means of CZ method.Vacuum purity is considered as having great influence on carbon contamination and that higher vacuum provides the significant decrease in carbon content in silicon crystal.Average carbon content in the tail-ends of growing silicon crystal [C]=3×106cm-3,45% less than that by unimproved process.Tab.1 Results of unimproved test.[C]S1:carbon content in Si crystalSupporter,heater graphite Shield graphite-Mo.Tab.2 Test results.Coating: supporter-SiC,heater-pyrolytic graphiteShield-quartz-Mo.Tab.3 Test results.Coating: supporter-Mo,heater-pyrolytic graphiteShield-quartz-Mo.Tab.4 Test results.Coating: supporter and heater-ZrO2 Shield-quartz-Mo.Tab.5 Test results.Supporter coated with Mo,graphite heater and quartz-Mo shield.Schematic of crystal growth system Fig.1-pull rod; 2-graphite cover 3-quartz shield; 4-Mo shield; 5-heater coated with pyrolytic graphite or ZrO2; 6-quartz crucible; 7-supporter coated with Mo,SiC or ZrO25 8-crystal; 9-melted silicon.Fig.2 Sampling positions for measuring C content by means of infrad absorption

在真空下用CZ法生长硅单晶时,经热力学分折和实验研究证明,硅单晶中碳的主要来源除石墨托与石英坩埚间的反应生成CO外,气氛中氧化组元(O_2,SiO等)亦与石墨器件反应生成CO。碳以CO形式进入融硅,使硅单晶中碳含量增加。本研究采用了对石墨器件表面涂SiC、Mo、ZrO_2和热解石墨等方法,并用石英保温筒代替石墨保温筒。在真空度为1~3×10~(-2)托下,投料300g,用CZ法生长硅单晶,其晶体尾部的碳量平均值,比原工艺晶体中碳的平均含量降低了45%。

Tests have been carried out with feldspar and quartz as abrasive material in a wear

用两种典型的磨料(长石和石英沙),试验了不同含水量对塑料和钢的磨损的影响。指出了在磨料磨损过程中含水量是个敏感因素,分析了水在磨料磨损中的三个主要作用:(1)对砂粒的粘结作用;(2)摩擦氧化作用;(3)水膜的润滑作用。论述了磨料磨损过程中磨损机理的转变。此外,还试验了不同颗粒度和滑动速度对磨损的影响,最后提出了这些试验结果在实际应用中的可能性。

 
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