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room
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  室温
    Theoretical Research on Mechanism of Magnetic Phase Transition for Room Temperature Magnetic Refrigeration GdSiGe Alloys and Their Nano-calculations
    室温磁致冷GdSiGe系合金的磁相变机理的相关理论研究及纳米化计算
短句来源
    A ROOM TEMPERATURE SECTION OF THE PHASE DIAGRAM OF TiAl_3-VAl_3-MAl_3 OF THE QUATERNARY SYSTEM ALLOYS OF Al-Ti-V-M (M = Ni, Fe)
    Al-Ti-V-M四元系合金TiAl_3-VAl_3-MAl_3(M=Ni,Fe)赝三元系相图的室温截面
短句来源
    PHASE RELATIONS OF THE Fe-La SYSTEM AT ROOM TEMPERATURE
    Fe-La系室温相关系的研究
短句来源
    A PART OF ROOM TEMPERATURE SECTION OF PHASE DIAGRAM OF Y-Cu-Ni(Y≤16.7 at.-%)SYSTEM
    Y-Cu-Ni(Y≤16.7at.-%)三元系相图的室温截面
短句来源
    A PART OF ROOM TEMPERATURE SECTION OF PHASE DIAGRAM OF Dy-Co-Ni(Dy≤35.6 wt-%)SYSTEM
    Dy-Co-Ni三元合金系相图的室温截面
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  “room”译为未确定词的双语例句
    ROOM TEMPERATURE AND 750℃ ISOTHERMAL SECTIONS OF Ag-Pd-Gd TERNARY SYSTEM (Gd≤25 at.-%) PHASE DIAGRAM
    Ag-Pd-Gd三元系(Gd≤25at-%)部分相图
短句来源
    Low Cyclic Deformation Behavior of Austenitic Stainless Steel at Room and Low Temperatures
    常温及低温下奥氏体不锈钢低循环变形行为的研究
短句来源
    PREPARATION OF ROOM TEMPERATURE SnO_2-a-Fe_2O_3 GAS SENSOR
    常温SnO_2-α-Fe_2O_3气敏元件制备
短句来源
    The gravimetric and volumetric hydrogen storage capacities of the bulk sample reach 6.3 wt% and 31.6 kg/m3 at room temperature under a pressure of 145 atmospheres, respectively.
    经提纯并压块后,多壁纳米碳管的重量储氢能力和体积储氢能力可分别达到6.3%和31.6kg/m~3。
    The tensile elongations of the 4%TiC/Al-9Si-1.4Cu-0.5Mg composite at room temperature and at 260℃ respectively are near upon those of unreinforced alloy.
    复合材料的延伸率与Al-9Si-1.4Cu-0.5Mg合金相当。
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  room
The interaction between 18-methyl norethindrone and ketoprofen, including the displacement of ketoprofen from human serum albumin binding sites, was investigated by the capillary electrophoresis-frontal analysis method (CE-FA) at room temperature.
      
The crystal energy of ionic liquid is much lower than ionic solid and this is the underlying reason for forming ionic liquid at room temperature.
      
The reaction process was monitored by the temporal evolution of the UV-Vis absorption and room temperature photoluminensce spectra.
      
The samples were characterized by XRD, BET, DTA-TG, UV-Vis, and their photocatalytic properties were evaluated with two model pollutants, methylene blue (MB) and rhodamine B (RB), at room temperature.
      
The P-E hysteresis loops are measured by means of the Sawyer-Tower test system with a compensation resistor at room temperature.
      
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Many oxides of heavy metals when existing not in exact stoichiometric combining ratios exhibit the properties of a semi-conductor.The resistance ofsuch materials has a very large negative temperature coeffcient.Such thermallysensitive resistors,known as“thermisters”,have found wide range of appli-cations in thermometry,communication engineering,etc.In this investigationwe tried over hundred samples of metallic oxides and their mixtures fusedwith glass powder to form small compact bead on Pt lead wires.The sampleswere...

Many oxides of heavy metals when existing not in exact stoichiometric combining ratios exhibit the properties of a semi-conductor.The resistance ofsuch materials has a very large negative temperature coeffcient.Such thermallysensitive resistors,known as“thermisters”,have found wide range of appli-cations in thermometry,communication engineering,etc.In this investigationwe tried over hundred samples of metallic oxides and their mixtures fusedwith glass powder to form small compact bead on Pt lead wires.The sampleswere treated by a new firing technique which is very convenient in laboratory.Some samples made from mixed oxides of Mn,Co and Ni showing a resistanceof 10~4-10~5 ohms at room temperature and 10-100 ohms at 500℃ seem.verypromising for practical purposes.

多种重金属的氧化物,经高温煅烧后,均可呈现电子性半导体的性质,其电导随温度急剧变化,故可作测量温度之用,通常称热感电阻。从电导的对数与温度的倒数的图中,可以推算半导体电导性所需的电子能位差。本文试验氧化物混入玻璃粉制成的小珠,用半导体体内电热法制成热感电阻,在常温时的电阻值为10~4—10~5欧姆,在500℃时只有10—100欧姆。半导体与铂导体线间的电性接触,经实验推知是良好的。这种制备方法,在实验室里,非常简易。经多次试验,以混合锰、钴、镍的氧化物和玻璃粉制成的电导性较大,有实用价值。

The study of the distribution of hydrogen in steel ingots, despite its practical importance, has not received due attention from previous workers. Available experimental results are mainly fragmentary and non-systematic, and therefore many disputable opinions exist. Desirous of investigating this problem in greater details, the authors employed several annealed ingots of high chromium steels which were considered to be particularly suitable because they evolved little gas at room temperature and consequently...

The study of the distribution of hydrogen in steel ingots, despite its practical importance, has not received due attention from previous workers. Available experimental results are mainly fragmentary and non-systematic, and therefore many disputable opinions exist. Desirous of investigating this problem in greater details, the authors employed several annealed ingots of high chromium steels which were considered to be particularly suitable because they evolved little gas at room temperature and consequently the inherent difficulty to avoid the loss of hydrogen during sampling was, to a very large extent, overcome. For this purpose also, suitable apparatus capable of determining relatively small amount of hydrogen was constructed. The results obtained show that the hydrogen distribution in the annealed ingots follows a significant and regular pattern, thus dismissing certain misgiving conclusions based on contradictory results given by previous workers. Although the average hydrogen content of the anealed ingots amounted to not more than half that of the liquid stael, yet in certain parts of their interior the local hydrogen content was found to be higher than that of the liquid steal. This affirms the existence of hydrogen segregation in steel ingots. Moreover, from maps of hydrogen contour lines drawn for the ingots it can be seen that the regions of the highest hydrogen content roughly coincide with the last solification. Indeed, the effect due to certain external irregularities encountered in the course of solification is detectable rather from the hydrogen maps than by the usual method of macro-etching.In the longitudinal or the transverse direction of the annealed ingots, the general trend of hydrogen variation based on average hydrogen content is shown to be governed by the law of hydrogen diffusion. Further examinations reveal that the ingot structure and its internal porosity exert considerable influence upon the distribution. It is likely that hydrogen diffusion may be faster in columnar crystals than in equi-axed crystal regions. The presence of porosities in ingots seems to retard the removal of hydrogen. Such implications have not been sufficiently realized in the past.Based on the discussion of the experimental results, certain immunizing treatment suitable for preventing hairline cracks in certain types of steel is explained.

氢在鋼锭中的分佈是一个具有重要实际意义的问题,但在过去未得到研究工作者足够的重视.本文利用高铬型合金鋼在常温下不损失氢的特点,并建立了適宜的半微量定氢装置,对退火后的鋼锭中各个部位进行了定氢试验。结果证明,氢在鋼锭中的分佈是具有规律性的,指出了前人根据不全面的实验结果所提出的错误结论. 经过退火处理后的鋼锭,其平均含氢量虽然只及原来钢液含氢量的一半,伹在某些局部其含氢量反而高於钢液.这说明钢锭中确有氢的偏析现象存在.根据等氢曲线的分布情况来看,钢锭中氢偏析严重之处大致与最后凝固的部分相符.凝固过程中钢锭一面受到中注管散热的影响,也能从等氢曲线的分佈情况反映出来,而这种影响从低倍检验结果来看是没有能够觉察到的. 从氢含量变化的平均趋势来看,退火钢锭中的氢分佈不管是沿横方向抑是沿縱方向都服从於扩散规律,伹必须考虑到结晶构造和内部缺陷的影响.譬如,沿柱状晶轴方向的氢扩散似乎比等轴晶区域内的氢扩散速度大,而钢锭中心疏松对於去氢则起阻碍作用,过去对於这些方面的了解是不够的. 根据上述结果的分析讨论,本文还为某种防止钢中白点的热处理方法提供了理论上的解释.

A β superlattice structure, with the ideal stoichiometrical formula AgAuZn2 and isoinorphous with that of Heusler alloys, has been found existing over a quite wide range of composition. It is, in fact, a superstructure of the β ordered structure. Its formation is accompanied by a sudden lattice contraction. The effect of gradual substitution of Ag by An on the atomic distribution has been stndied systematically. It is shown that the Au atoms introduced simply replace the Ag atoms more or less in a random manner,...

A β superlattice structure, with the ideal stoichiometrical formula AgAuZn2 and isoinorphous with that of Heusler alloys, has been found existing over a quite wide range of composition. It is, in fact, a superstructure of the β ordered structure. Its formation is accompanied by a sudden lattice contraction. The effect of gradual substitution of Ag by An on the atomic distribution has been stndied systematically. It is shown that the Au atoms introduced simply replace the Ag atoms more or less in a random manner, the positions of Zn atoms not being affected. Tho decrease of the degree of order as deviating from the stoichiometrical formula is not merely due to the deviation from the ideal chemical composition; some disordering among the Ag and Au atoms also occurs. High temperature investigation of Ag-rieh alloys shows that the temperature of β'-β transformation increases with Au content and that the β-phase structure exists only at high temperatures. The presence of even a minute amount of Au stablizes the β' structure obtained by quenching very remarkably. On the other hand, the β' structure of Au-rich alloys persists from room temperature probably to the melting point.

合金AgAuZn_2具有一个与郝斯勒合金同晶型结构的β″相,这个β″相存在于一个相当广阔的成分范围里。事实上,β″相就是β′有序结构的超结构。伴随着,β″结构的形成晶格发生突然的收缩。关于Ag-Au替换对于原子分布的影响,也作了系统的观察。在Ag-Au替换过程中,Au和Ag的替换或多或少是无规律性的,但Zn原子则仍保持它们的适宜位置,而不受到影响。当成分偏离于理想化学式AgAuZn_2时,有序度的减小不仅仅是由于化学成分的乖异,而且Ag-An替换也产生了一些无序的排列。高温观察的结果指出:Ag多合金的β′-β转变温度随着Au含量的增加而升高,而β相只能在高温度存在。少量的Au大大地提高了由淬炼而得到的β′相的稳定度。但是Au多的合金无论是在室温和高温都是具有β′结构的。

 
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