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standard samples
相关语句
  标样
    Separate Determination of σ,M_(23)C_6 and other Phases in Nickel-Base Super Alloy(K_(23))——Group Separation by Chemical Method and Quantitative X-ray Diffraction Without Standard Samples
    K23镍基高温合金中σ、M_(23)C_6等相的态别定量—化学分组分离联合无标样衍射定量法
短句来源
    DEVELOPMENT OF Fe-C ALLOY STANDARD SAMPLES FOR EPMA
    电子探针分析用标样——Fe-C合金标样组的研制
短句来源
    Chemical analysis method is used to determine the concentrations of Al and Cu of the testing standard samples while the concentration of base element Zn is calculated by the normalization method. The concentration range of Al, Cu and Zn are 24.720 ~ 31.113% , 1.340 ~ 5.710%, and 67.070 ~ 69.570% respectively.
    利用化学分析法对试验标样中分析元素Al、Cu的含量进行了标定,其浓度范围分别为Al:24.720~31.113%,Cu:1.340~5.710%。 基体Zn的浓度则通过归一法求得。
短句来源
    The technological conditions on which to prepare the standard samples, sach as ATB, ATB+W_(20)O_(58), WO_2+α-W and WO_2+β-W+α-W, are presented in this paper.
    本文介绍了制取ATB、ATB+W_(20)O_(58)、WO_2+α-W、WO_2+β-W+α-W等标样的工艺条件。
短句来源
    In this paper there are three kinds of standardless quantitative analysis results obtained from the commercial EDAX 9100. TN5500 and KEVEX8000 EDS at 5-30kV. The Cu-Au alloy of NES. GaAs. GaP and InP are used as standard samples.
    本文用NBS的Cu—Au合金、GaAs、GaP和InP等标样,对三种商用EDS (EDAX9100,TN5500和Kevex8000)在5~30 kev下的无标样定量分析结果进行了比较,指出了提高低压电子探针定量分析准确性需要解决的问题。
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  标准试样
    Preparation of the Standard Samples in Quantitative Auger Analysis
    俄歇定量分析中标准试样的制备
短句来源
    Preparation and Final Value of Gas Standard Samples for Titanium and Titanium Alloys
    钛及钛合金气体标准试样的制备及定值
短句来源
    The results of hydrogen determination in seven hydrogen standard samples (steel, titanium, tantalum powder, niobium powder and stainless steel, etc) by this instrument were in good agreement with the certificated values.
    该仪器对国内外七种氢标准试样(钢、钛、钽粉、铌粉,不锈钢)进行了测定,其结果与标准值完全一致。
短句来源
    Finally the accuracy of this method was confirmed by 36 standard samples from different type stainless steels.
    最后用36个不同牌号的不锈钢标准试样验证了本分析方法的准确度。
短句来源
    With the help of mathematical statistical method, the artical has proved that it is reliadle to make the technological samples dy infor -mal statidand means when the CO2 sodium silicate sand technologocal samples made dy informal standard samples mae are adout the same weigh t.
    本文应用数理统计的方法论证了在用非标准方法制作的CO_2水玻璃砂工艺试样与标准试样重量相当的情况下,采用这种非标准试样是可靠的.
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  “standard samples”译为未确定词的双语例句
    Determination of the Alloy phase Boundary by x-ray Quantitative phase Analysis without standard samples
    用x射线无标定量相分析法测定合金相边界
短句来源
    According to the method of x-ray quantitative phase analysis without standard samples and the principle of phase equilibrium, this investi-gation presented a simplification method determining alloy phase boundary:in the ternary system, a three-phase region would be determined so long as you prepared three samples in this region. Using this method, we determined the phase boundary of the three-phase region Co+AlCo+Co_3Sn_2 in the Al-Co-Sn system.
    根据x射线无标定量相分析方法和相平衡原理,本文提出一种测定合金相边界的简易方法:在三元系三相平衡区内,只要配制三个试样,便可测出这三相平衡区的相边界,用这种方法对Co+CoAl+Co_3Sn_2三相区边界进行了测定。
短句来源
    A working curve is established by means of fitting the relation between the contents of Ni, Mn, Co and intensities of characteristic X ray from standard samples.
    测量未知样品时 ,由测得的Ni、Mn、Co的特征X射线强度 ,通过工作曲线求得Ni、Mn、Co含量。
短句来源
    After analyzing with the national standard samples, the results show that the relative deviation is less than 1.3%, recovery ratio is between 99.6% and 99.8%.
    经对国家标准样品进行分析,相对偏差≤1.3%,回收率99.6~99.8%。
短句来源
    Taking the speckle images formed by flat-ground standard samples with Ra (the average value of surface roughness) as 0.1micron, 0.2micron, 0.4micron and 0.8micron, respectively, for examples, the correlation function is obtained according to the calculation for discretization definition of its intensity variations.
    以表面粗糙平均值Ra分别为0.1靘, 0.2靘, 0.4靘和0.8靘的平磨标准金属样块形成的散斑图像为例,根据强度变化相关函数的离散化定义,计算得到该相关函数值。
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  standard samples
A method is developed for the separate determination of aluminum and beryllium using cellulose as the support; the method was used for the analysis of real samples and tested with standard samples.
      
IUPAC Recommendations for Reference Standard Samples in pH Measurements
      
Designing of Standard Samples for Determining the Sensitivity of Eddy-Current Devices to the Metal Inclusion Content in a Parama
      
The reasons of the wide propagation and the high effectiveness of using standard samples of magnetically soft materials are explained.
      
A numerical analysis of these errors is performed using standard samples as examples.
      
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A spectro-chemical method, for the analysis of trace of impurity elements (Pb, Bi, Sn, Sb, As) in one kind of Ni-alloys, was developed, with D.C. arc powder excitation following H_2S pre-separation.Owing to the needs of long periods of operation and large amount of reagents, the use of A. R. grade reagents led to a considerable blank value. After using purified reagents, the blanks (for Pb, Sn) were reduced to a μ-gram range.During the arcing of the specimens, the evaporation of arsenic was found to be very...

A spectro-chemical method, for the analysis of trace of impurity elements (Pb, Bi, Sn, Sb, As) in one kind of Ni-alloys, was developed, with D.C. arc powder excitation following H_2S pre-separation.Owing to the needs of long periods of operation and large amount of reagents, the use of A. R. grade reagents led to a considerable blank value. After using purified reagents, the blanks (for Pb, Sn) were reduced to a μ-gram range.During the arcing of the specimens, the evaporation of arsenic was found to be very imcomplete. The addition of P_2O_5 accelerated its evaporation very obviously. While the sample being utilized efficiently, the sensitivity of arsenic increased 4—5 times. It was noticed that at the position of the line As 2349 (?), the band spectra of carbon ignited in air was very obvious and a correction must be made.Results of experiments showed that standard samples could be prepared by the H_2S treatment of pure standard solutions. The usual blank correction of the matrix could thus be avoided.An analytical procedure was suggested and the results of three specimens were listed. These data showed teat the lower limits of analysis of this method were: Pb:0.0001%, Sn, Sb:0.0002%, As:0.0003% and Bi:0.00002%.

采用硫化氢分离、深孔电极直流电弧粉末法进行了一种镍基合金中微量有害杂质(Pb,Bi,Sn,Sb,As)的分析。由于操作流程较长,试剂用量亦较大,即使采用分析纯级试剂实验空白(主要为Pb,Sn,As)也很高。为此系统地分析了空白的来源,并寻找了降低的办法,最后使Pb,Sn的空自值降低至1—2微克。满足了分析的要求。试样中,As的蒸发很不完全。加入P_2O_5后,使As的蒸发大大加速。由于有效地利用了样品,因而使As的灵敏度提高了4—5倍。实验中发现在As 2349埃处有碳电极在空气中燃弧所产生的带状光谱。系统实验的结果表明,可以用经过硫化氢沉淀后的纯溶液来配制标准样品,避免了采用一般增量法制定定标曲线,保证了结果的准确度。通过系统实验,确定了操作条件。对于三个实际试样进行了多次分析。结果说明,本法的分析下限分别为:Pb:0.0001%,Sn,Sb:0.0002%,As:0.0003%,Bi:0.00002%。

According to Alexander's relation between diffraction intensity and weight fraction, two new calculation equations of x-raw quantitative phase analysis are obtained. According to these equations, two new methods of quntitative phase analysis are established, that is the method with reference sample and the method without standard sample.One of them can be used in the phase analysis without determined phases which are used as standard sample. Therefore,the problem to obtain pure phase is solved. The other can...

According to Alexander's relation between diffraction intensity and weight fraction, two new calculation equations of x-raw quantitative phase analysis are obtained. According to these equations, two new methods of quntitative phase analysis are established, that is the method with reference sample and the method without standard sample.One of them can be used in the phase analysis without determined phases which are used as standard sample. Therefore,the problem to obtain pure phase is solved. The other can be used in the phase analysis sample, in such a case internal standard samples are not necessary. The experimental operations, therefore, can be simplified and the determination accuracy can be improved.

根据Alexander提出的衍射强度和相的含量的关系式,导出了两组新的X射线定量物相分析计算公式。根据这些公式建立了两个新的定量分析方法,即无标样法和参考试样法。利用无标样法,不需要事先获得纯的被测相作标样,从而解决了难以获得纯相的定量分析问题。利用参考试样法,在被测试样中不需要掺入内标物,从而简化了实验手续和提高了测量精度。

Brown oxides which consist of three phases including α-W, β-W and WO2 have been produced by the first stage reduction of blue oxides or of WO3 doped Si, Al and K. By using the two phase standard sample and with the help of oxygen content in brown oxides, the quantities of the three phases in various brown oxides can be determined.For the reduction of blue oxide as raw material, the brown oxide has the highest content of β-W when the process factors are 630℃, 65 minutes per boat and the charge with the...

Brown oxides which consist of three phases including α-W, β-W and WO2 have been produced by the first stage reduction of blue oxides or of WO3 doped Si, Al and K. By using the two phase standard sample and with the help of oxygen content in brown oxides, the quantities of the three phases in various brown oxides can be determined.For the reduction of blue oxide as raw material, the brown oxide has the highest content of β-W when the process factors are 630℃, 65 minutes per boat and the charge with the thickness of 6mm thick. Water vapour in hydrogen hinders the formation of β-W seriously; while the additives Si, Al and K promote its formation evidently. The β-W forms easier for the reduction of blue oxide than WO3.In ambient temperature atmosphere, the β-W in brown oxide is more stable. Under given conditions the doping effect of additives rises with the increase of β-W content in brown oxide.

含硅、铝、钾掺杂剂的蓝色氧化物或WO_3经第一次还原成由a-W、β-W、WO_2三相物质组成的棕色氧化利用两相标样,并借助于氧含量,能够定量分析出棕色氧化物的成分。 以蓝色氧化物为原料,当还原温度为630℃,还原时间为65min/boat,料层厚度为6mm时,棕色氧化物中β-W含量最高。氢气中的水分严重阻碍β-W的形成。硅铝钾掺杂剂大大促进β-W的形成。与WO_3相比,以蓝色氧化物为原料更容易形成β-W。 在室温大气中,棕色氧化物中的β-W比较稳定。在一定条件下,掺杂剂的掺杂效应随棕色氧化物中β-W含量的增加而增强。

 
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