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机理
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  mechanism
    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
短句来源
    Study of Dielectric Mechanism of Microwave Dielectric Ceramics with Perovskite Structure
    钙钛矿结构微波陶瓷介电机理的研究
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    Formation of Low Ca/Si Ratio C-S-H Gel and Its Mechanism in Controlling ASR in High Performance Cement
    高性能水泥中低Ca/Si的C-S-H凝胶形成及其抑制ASR机理
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    Strengthening and Toughening Mechanism of Steel Fiber Reinforced High-strength Concrete and Design Method Based on Toughness
    钢纤维高强混凝土增强、增韧机理及基于韧性的设计方法研究
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    Feasibility and Mechanism of Electroless Plating on the Surface of Rigid PVC
    难镀型硬聚氯乙烯表面化学电镀的可行性及其机理的研究
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  principle
    Investigation into Spurting Principle of Electrostatic Oiler
    静电涂油机喷涂机理研究
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    An Investigation of the Separation Principle of Hydrocyclone
    水力旋流器分离机理探讨
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    Studies on the Separation Principle of Cyclone
    旋流器分离机理探讨
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    Conversion principle of cyclone separator and its application
    旋风式选粉机的改造机理及应用
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    The Composite Principle of the High Performance Cement Based Materials——formation conditions and their mechanism of the interpenetrating network of the very high strength inorganic and organic composite cement
    高性能水泥基材料的复合原理——特高强无机有机复合水泥互穿网络结构的形成条件及机理
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  “机理”译为未确定词的双语例句
    The Ageing of Ceramic Humidity Sensor
    陶瓷湿度传感器永久性老化机理分析
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    ON FORMATION OF THE DUPLEX MICROSTRUCTURE OF β〃-ALUMINA CERAMICS
    关于β〃氧化铝陶瓷双重结构的形成机理
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    SYNERGISTIC EXTRACTION OF Co(Ⅱ) AND Ni(Ⅱ) WITH 1-PHENYL-3 METHYL 4-BENZOYL PYRAZOL 5 ONE (PMBP)AND DI (1 METHYL HEPTYL) METHYL PHOSPHONATE(P_(350)) BY USING THE TWO PHASE TITRATION METHOD
    用两相滴定法研究PMBP与P_(350)对Co(Ⅱ)、Ni(Ⅱ)的协同萃取机理
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    STUDY ON ENHENCING HEAT TRANSFER OF GROOVE SURFACE BOILING
    槽道表面沸腾强化传热机理研究
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    Kinetics of Making Formic Acid and Sodium Bicarbonate by Gas-Liquid-Liquid Double Decomposition
    气液液复分解法联产甲酸和碳酸氢钠的机理(Ⅱ)
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  mechanism
The Activation Mechanism of Class-III G-Protein Coupled Receptors
      
A gene regulatory mechanism has been proposed in which steroid hormones and certain other drugs bind to nuclear receptor proteins followed by transfer to DNA where they are inserted between base pairs.
      
The fact that the pKi values for both butyrylcholinesterase and acetylcholinesterase inhibitions are linearly correlated with each other suggests that both enzyme inhibitions proceed via a common mechanism.
      
A QSRR derived by means of various statistical procedures are reviewed from the viewpoint of identifying retention affecting various factors and understanding the mechanism of chromatographic separations.
      
The link curve of a spherical four-bar mechanism can be separated into two branches.
      
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  principle
A local-global principle is proved by the second named author in the adjacent paper of this volume.
      
A local-global principle for finiteness properties ofS-arithmetic groups over number fields
      
In this paper a local-global principle forS-arithmetic groups over number fields is proved.
      
From it, we recover Joseph and Letzter's result by a kind of "quantum duality principle".
      
An Uncertainty Principle for Eigenfunction Expansions
      
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75—80% Al_2O_3. CaO·6Al_2O_3,

含Al_2O_3在75~80%的高铝砖使用于炼钢平炉的喷火口及炉顶部分,其腐蚀过程是相似的。应用偏光显微镜监定了未被腐蚀和腐蚀过后的高铝砖的矿物组成,未腐蚀砖主要由无色刚玉晶体和少量莫来石及玻璃组成,腐蚀后的高铝砖中有刚玉、赫博慕石(hoegbomite)、六铝酸钙(CaO·6Al_2O_3)、再结晶刚王、透明的尖晶石、磁鉄矿和玻璃质等。从腐蚀深浅不同的部分分别取样,进行了化学分析。根据分析结果制出腐蚀过程中化学成分变化曲线,并研究了化学成分变化与矿物成分变化的对应关系。在高铝砖腐蚀过程中,最有兴趣的物理化学反应是赫博慕石的形成。作者讨论了这个矿物形成的机理,更与自然岩石中赫博慕石的出现作了比较。 总结显微镜下研究及化学分析结果,作者提出来关于高铝砖使用时损坏原因的理论上的推测,并提出来改进高铝砖质量及延长高铝砖寿命的方向。

45%,65% 80% 1,380%-Al_2O_3 10%CaO-Al_2O_3-SiO_2 CaF_2-CaO-Al_2O_3-SiO_2 5% CaF_2. 45%-80%-Al_2O_3

本文研究了含氟高炉型熔渣对Al_2O_3含量各为45%、65%、80%的三种Al_2O_3-SiO_2耐火材料及一种炭砖的侵蚀作用,探讨了温度、渣中氟含量、碱度及铝氧含量等因素对于熔渣侵蚀速率的影响。发现温度与侵蚀速率之间的关系可大致用Arrhenius式的指数方程式来表示;提高渣中氟含量或碱度因而使侵蚀作用加剧的机理是相似的;在碱度较高的含氟渣中铝氧起酸性氧化物的作用,减轻熔渣的侵蚀能力。在Al_2O_3-SiO_2系统的耐火材料中,Al_2O_3含量愈高则抵抗含氟渣侵蚀的能力愈强,铝氧含量80%的致密高铝砖的抗蚀能力尤其值得推荐。含氟渣对炭砖的侵蚀则极为轻微。本文进而研究了静止的侵蚀作用所产生的一系列矿物变化,利用CaO-Al_2O_3-SiO_2及CaF_2-CaO-Al_2O_3-SiO_2系统相图对含氟渣的侵蚀过程加以解释。

The corrosive action of neutral and reducing gas streams containing HF at high temperatures on fireclay and high-alumina refractories has been investigated. The influences of HF eoncontration, temperature variation and the water vapor content in the gas stream etc. have been eritically studied. With the aid of thermodynamie analyses of the various reactions between HF and the mineral constituents of the alumino-silicate refractories, it has been found possible to satisfactorily explain the mechahism of the corrosive...

The corrosive action of neutral and reducing gas streams containing HF at high temperatures on fireclay and high-alumina refractories has been investigated. The influences of HF eoncontration, temperature variation and the water vapor content in the gas stream etc. have been eritically studied. With the aid of thermodynamie analyses of the various reactions between HF and the mineral constituents of the alumino-silicate refractories, it has been found possible to satisfactorily explain the mechahism of the corrosive actions.Within the temperature range 500—900℃, it has been found that an increase in temperature is always unfavorable to the corrosive reactions. At temperatures above 700℃, the action of neutral gas streams containing 0.1% HF is very mild on both kinds of refractories. For gas streams containing HF up to 1%, mullite is murh more resistant to attack than eristobalite, especially for temperatures over 700℃. When the HF concentration is increased to 6%, mullite is, however,also severely attacked in the above mentioned temperature range. Gas streams containing water vapor is helpful to minimize the corrosive action of HF gas. Lastly, it is interesting to note that a reducing gas stream, similar in composition to that of blast furnace gas, further supresses the corrosive action of HF in low concentration (0.1%), due probably to some sort of carbon protective film formed on the surfaces of refractory sample grains.

本文研究了含HF的中性与还原性气流在高温下对于粘土砖与高铝氧砖的侵蚀作用。探讨了HF的浓度变化、温度变化及气流中的水蒸气含量变化等因素,对于侵蚀作用的影响。借助于HF气体与矽酸铝耐火材料各个矿物组分间的化学反应的热力学分析,可以较满意地阐明侵蚀作用的机理。 在500~900℃的温度范围内,提高温度不利于侵蚀作用的进行。含HF0.1%的气体,在700℃以上对两种耐火材料的侵蚀均甚轻微。当气流中HF的浓度低于1%时,莫来石抵抗侵蚀的能力,特别在700℃以上,远较方石英为优。当HF的浓度到达6%时,莫来石在上述温度范围内也被严重地侵蚀了。气流中含有水蒸气可以减轻HF的侵蚀作用,类似高炉气的还原性气氛更可使低浓度的HF气体的侵蚀作用大为减弱。

 
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