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materials
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  材料
    Study on Mechanism of Pulse Electric Current Sintering of Ceramic Materials
    陶瓷材料脉冲电流烧结机理的研究
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    Study on the Preparation and Application of New Polymer Materials for Stabilizing Sandy Soil
    新型高分子沙土稳定材料的研制与应用
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    Study on the Formation of Carbonaceous Mesophase Structures and the Applications of Thereof Carbon Materials
    碳质中间相结构的形成及其相关材料的应用研究
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    Study on Fabrication and Application Fundamentals of Zirconia Matrix Composite Ceramic Materials for Spinning and Weaving Scissors
    氧化锆基复合陶瓷纺织剪刀材料的研制及其应用基础研究
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    Novel Energy Source Materials-Study on the Electerode Materials for Electrochemical Capacitor and Lithium Ion Battery
    新型能源材料—电化学电容器与锂离子电池电极材料的研究
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  原料
    Influence of Particle Sizes of the Raw Materials on the Grain Size and PTC Effect of BaTiO_3 Ceramics
    原料颗粒度对BaTiO_3陶瓷晶粒大小及PTC效应的影响
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    Influence of Additive ZrSiO_4 in Row Materials on the Proporties of High-alumium Containing Refrectory
    原料中添加ZrSiO_4对高铝质耐火材料性能的影响
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    DETERMINATION OF BULK DENSITY AND POROSITY OF GRAINS OF CARBON RAW MATERIALS
    炭素原料颗粒体积密度和孔隙率的测定
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    An Investigation of Ceramic Raw Materials in the Jizhou Kiln Area
    吉州窑瓷用原料考察
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    The Fusion Method of Ceramic Raw Materials High in Aluminum and the Determination
    高铝陶瓷原料的瓷坩埚熔样法及其测定
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  物料
    Study on the Mechanism and Method of Freeze Drying of Materials in Vials
    瓶装物料的冷冻干燥机理与方法的研究
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    VACUUM DISTILIATION OF HEAT SENSITIVE MATERIALS
    热敏物料的真空精馏
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    EFFECTING FACTORS OF CYCLONE PREHEATER SYSTEM ON PREHEATING OF MATERIALS
    论旋风预热器系统对物料预热效果的影响因素
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    Study on New Method to Distillate the Heat-Sensitive Materials
    热敏物料的新精馏方法的研究
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    Experimental Study on Effect of Mass Transfer between Supercritical CO_2 and Solid Raw Materials
    超临界CO_2萃取固态物料传质效果的试验研究
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  “materials”译为未确定词的双语例句
    Fabrication, Characterization and Application of Carbon Nanotube Composite Materials
    碳纳米管复合材料的制备、表征与应用
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    Formation and Properties of ⅣB Transition Metal Nitride and Nanocomposite Materials
    ⅣB族金属氮化物及其纳米复合材料的合成与性能
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    Influences and Control of Raw Materials on Crack of Mass Concrete of Foundation
    原材料对基础大体积混凝土裂缝的影响与控制
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    A Preliminary Research of Making Pure Sodium and Caustic Soda by Electrolyzing Sodium Chloride or Crude Sodium and Using Ceramic Materials β——Al_2O_3 as a Membrane
    关于用β—Al_2O_3为隔膜电解熔融氯化钠或粗钠制取高纯金属钠和烧碱的初步研究
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    A QD-1 Automatic Control System for Metering and Transporation of Liquid Materials
    QD-1型液料计量输送自控系统
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  materials
At that time, the polymer and plastic industry was in its nascent stage but the industry quickly grew, providing the materials for a large portion of manufactured goods.
      
Structural and physicochemical descriptors derived by RP-HPLC are discussed in relation to retention factors with special accent on properties of reversed-phase materials.
      
We used different substituted isatins as starting materials.
      
In this paper, a method has been established and validated for screening and identification of individual as well as total BFA by high-performance liquid chromatography and liquid chromatography/electrospray mass spectrometry in fungal raw materials.
      
Column packing materials are always a key factor influencing the development of high-performance liquid chromatography (HPLC).
      
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Both sectorphotometer and microphotometer analyses were carried out on the Hg spectrum transmitted by papers popularly used as window materials in Chinese homes. The intensity distribution of transmitted radiation, after normal incidence, through samples of nine different kinds of paper have been studied, and the total transmission calculated for various wavelengths.

以水银灯为光源,正射於纸上,其透射部份,用分光摄影法定量。以分圆光度计(Sectorphotometer)及显微光度计(microphotometer)量出九种窗户纸之紫外线透射性。并实验各种纸之抗断强度及其纤维之构造等,俾得相当之评价。 通常窗户纸对於具有最高生理效用之紫外线(波长2967A.U.)之透射量可居百分之十九至四十一;我国南部之壳片窗亦可透射百分之二十。至於玻璃窗,其透射量则等於零。外国虽有特备之玻璃能透射百分之二十至八十之此种紫外线,但其价值殊昂,不能使其遍普应用,可见两者反不若我国之窗户纸为佳矣。 窗户纸中以平粉连纸透紫外线最多,如将纸上桐油,则可视线及紫外线之透射力,皆有可观之增加,同时亦可去潮湿以致易破之影响。倘以普通之豆油油之,则其易於变黄,并减低其紫外线透射力,甚不适宜也。 如欲得较完全之讨论,请参考陈尚义之硕士论文,现存於燕京大学图书馆。

In this paper the influence of Pr number, shape and thermal conductivity of the packing material and the bed height on the heat transfer coefficients of the packed beds have been thoroughly studied when air and water were cooled through packed tubes. In order to offer the data for the design of fixed bed, catalytic reactors and packed heat exchangers operated at high space velocity, high Re number was adopted.

填充床层之传热系数包括二重阻力,即床层内部的传热阻力和床层与管壁界面间薄膜的传热阻力。本文以空气和水为传热介质,使其流过填充床层冷却,改变操作条件和床层构造,考察了Pr准数,床层高度、填充物的导热系数和形状对於传热系数的影响。由於高速固定床接触反应器和填充热交换器逐渐在工业上取得了应用,高线速下的传热数据需要迫切,因此试验的范围采用了较大的Re准数。 玻璃或磁质等低导热系数球状填充物的传热系数可归纳成: 试验范围: D_p/D_t=0.08~0.5; L/D_t=10~30; Re=250~6500; Pr=0.722~4.8 铜、铁等高导热系数球状填充物的传热系数可归纳成: 试验范围; D_p/D_t=0.1~0.5; Re=300~10,000;   L/D_t=10~30 在此范围内所有试验皆经过二次以上的重复试验,误差一般不大於5%。 以圆柱体为填充物的传热系数,仅须将修正Re准数中的几何量D_p,改成与圆球具有相同的几何表面面积的球径D'_p即可。 以上二式说明流体的物理性质即Pr准数对传热系数的影响不很显著,床层高度对传热系数的影响:低导热系数填充...

填充床层之传热系数包括二重阻力,即床层内部的传热阻力和床层与管壁界面间薄膜的传热阻力。本文以空气和水为传热介质,使其流过填充床层冷却,改变操作条件和床层构造,考察了Pr准数,床层高度、填充物的导热系数和形状对於传热系数的影响。由於高速固定床接触反应器和填充热交换器逐渐在工业上取得了应用,高线速下的传热数据需要迫切,因此试验的范围采用了较大的Re准数。 玻璃或磁质等低导热系数球状填充物的传热系数可归纳成: 试验范围: D_p/D_t=0.08~0.5; L/D_t=10~30; Re=250~6500; Pr=0.722~4.8 铜、铁等高导热系数球状填充物的传热系数可归纳成: 试验范围; D_p/D_t=0.1~0.5; Re=300~10,000;   L/D_t=10~30 在此范围内所有试验皆经过二次以上的重复试验,误差一般不大於5%。 以圆柱体为填充物的传热系数,仅须将修正Re准数中的几何量D_p,改成与圆球具有相同的几何表面面积的球径D'_p即可。 以上二式说明流体的物理性质即Pr准数对传热系数的影响不很显著,床层高度对传热系数的影响:低导热系数填充物的传热系数随L/D_t比率之减小而逐渐增大,L/D_t>30,影响甚微,L/D_t=20,误差约7%,L/D_t=10,误差可达15%;高导热系数填充物的传热系数随L/D_t的增大略有增大的趋势,但影响?

During the smelting of an iron ore containing high fluoride content in a small blast furnace, the hearth refractories were severely corroded. This can be ascribed to the action of very fluid fluoride-containing slags.Moreover, the products of corrosion reactions also have low viscosity which easily flow away from the working face, and leave a new surface fresh for further attack.The stack lining with the same 45%-Al_2O_3 blast furnace brick was, however, in fairly good condition. The chemical analyses of the...

During the smelting of an iron ore containing high fluoride content in a small blast furnace, the hearth refractories were severely corroded. This can be ascribed to the action of very fluid fluoride-containing slags.Moreover, the products of corrosion reactions also have low viscosity which easily flow away from the working face, and leave a new surface fresh for further attack.The stack lining with the same 45%-Al_2O_3 blast furnace brick was, however, in fairly good condition. The chemical analyses of the inner surface of the brick samples show a high percentage of alkali-,alkaline earth-and fluoride-ion contents. But as the amount of melt formed at the temperatures on these zones is comparatively little, that corrosion is not severe.Minerals identified at the stack lining surface consist of: fluorite, fluoro-biotite, kaliophilitenephelite, leucite, cuspidine and spinels etc. This is the first time that mica minerals have ever been identified in blast furnace linings. It is thought that the formation of fluoro-biotite has fixed a part of the F~-, K~+ or Ca~(2+)-ions, which would otherwise go into the melt. Thus its formation actually exerts some protective action against the corrosion of the stack lining.The higher temperatures prevailing in the bosh region in contrast to the stack caused the formation of a much larger amount of fluoride-containing melt, which is probably responsible for the remarkable degree of Corrosion on the bosh refractories.High temperature experiments carried out in the laboratory on the reactions betwccn CaF_2 and 45%-Al_2O_3 brick powder in closed graphite crucibles throw light to explain the process of corrosion of the furnace lining. Hexagonal anorthite was identified in all of these experimtnts, which has identical optical properties and X-ray diffraction patterns with those of hexagonal anorthite synthesized in our laboratory. It is also interesting to note that these hexagonal anorthites change over to normal triclinic modification under heat treatment at 1000℃ for a period of 24 hours.As a result of this and other previous studies in this laboratory, the appropriate selection of refractory materials for the lining of blast furnaces, smelting iron (?)e containing high fluoride content, is recommended.

在某地高氟含量铁矿石的冶炼过程中,炉缸粘土质高炉砖砖视遭到了极其严重的破坏作用。主要侵蚀介质是含氟炉渣,侵蚀产物容易从砖面流失,因而加速了耐火材料的溶解。在炉身部位发现的矿物是:氟化钙、含氟黑云母、钾和钠的铝矽酸盐、枪晶石及尖晶石等。虽然在砖面附着物中包含着相当数量的氟、硷金属及硷土金属的化合物,但是由于温度较低,只有少量熔体出现,砖衬的损毁情况,并不严重。在高炉砖衬中发现云母矿物,还是第一次。在炉身部位的温度条件下,含氟黑云母具有固定F~-,K~+成Ca~(+2)的能力,对砖机起了保护作用。由于炉腹部位的温度较高,较大量含氟熔体出现,侵蚀就相当显著了。 CaF_2—45%Al_2O_3高炉砖的化学反应实验,可以帮助了解高炉砖视的损毁过程。反应产物中发现有六方钙长石,与实验室合成的六方钙长石具有一致的光学性质和X—射线粉末衍射图型。经过1000℃,24小时热处理后,这种六方钙长石会转变成为三斜晶系变体。 根据两个高炉砖衬的化学-矿物学研究及实验室中辅助研究的结果,对于冶炼高氟含量矿石的高炉砖衬的选择提出了建议。

 
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