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z参数
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  z parameter
     FES-DP System and Z Parameter Method to Evaluating Residual Life of Cr5Mo Steel
     FES-DP系统及Z参数法评定Cr5Mo钢的剩余寿命
短句来源
     The dependence of flow stress σ(ε=0.2) or the peak stress σ p on Z parameter is as follows:σ(ε=0.2)=3.67Z~(0.098)σ_p=2.9Z~(0.11) The dependence of dynamic recrystallized austenite grain size on Z parameter is in accordance with the following formula:
     流变应力σ、峰值应力σ_p、再结晶晶粒大小与Z参数呈线性关系σ_(ε(?) 0.2)=3.67Z~(0.098);
短句来源
     Graph and Y、Z parameter matrix of the malteport network
     多端口网络的图和Y、Z参数矩阵
短句来源
     With the methods of hot compression (by using Formastor-Press machine), this paper investigated the effect of Z parameter、strain ε and prior austenite grain size. Do on dynamic recrystallization grain size D of PCrNi3MoVA steel.
     此文利用Formastor-Press热模拟试验机研究了Z参数、奥氏体起始晶粒尺寸D_0和应变ε对PCrNi3MoVA铜动态再结晶晶粒尺寸D_(dyn)的影响。
短句来源
     Above this value, the DRX grain size Dr was independent on strain e and initial grain size of austenite D0 and was determined by Z parameter only.
     超过此临界值,DRX晶粒尺寸dr不再与形变量ε有关,而仅决定于Z参数
短句来源
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  z-parameter
     This paper is mainly concerned with reliability analysis of creep rupture property, life prediction and damage evaluation of heat-resistant steels based on the Z-parameter method, such as HK40、5Cr-0.5Mo、GH145 and 30Cr1Mo1V steels which are widely used in petrochemical and steam boiler plants.
     并以石化、蒸汽锅炉装置中常用的HK40、5Cr-0.5Mo、GH145和30Cr1Mo1V等耐热钢为例,利用Z参数法进行持久性能的可靠性分析、寿命预测及损伤评估。
短句来源
     Z-parameter Method for Life Prediction and Its Application of Heat-resistant Steels
     耐热钢寿命预测的Z参数方法及应用
短句来源
     1. The Z-parameter method can characterize the reliability evaluation of creep rupture life.
     1.利用Z参数方法实现了持久寿命的可靠性评估。
短句来源
     The relation between the dynamic recrystallization and Z -parameter has been investigated. Dynamic recrystallization takes place approximately in a certain range of Z -parameter, i. e. 25
     对动态再结晶与Z参数关系的研究结果表明,在一定的Z参数范围内即25<1nZ<37,高纯α-Fe可以发生动态再结晶,并给出动态再结晶图。
短句来源
     In this paper, the matrices of Y-Parameter and Z-Parameter for multiport network directly expressed by incidence matrix (or Cut-Set matrix, or loop-matrix) and Branch admittance ( or branch-impedance ) matrix are presented, which are useful in CAD of networks.
     本文通过图论方程推导出用关联矩阵(割集矩阵、回路矩阵)和支路导纳(阻抗)矩阵等直接表示多端口网络的Y和Z参数矩阵的公式,使用这些公式便于编程计算。
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  “z参数”译为未确定词的双语例句
     3. 23MnNiCrMo54 steel deformed and heat treated at 600 C or 650 C respectively can accelerate the precipitation of carbide and the microstructure is influenced by parameter Zener-Hollomon and strain.
     3.在600℃和650℃分别对23MnNiCrMo54钢进行形变热处理能大大促进碳化物的析出,且23MnNiCrMo54钢形变处理后的微观组织受Z参数和变形量的影响。
短句来源
     The expression of the minimun noise figure for microwave bipolar transistors is presented by using Z parameters analysis. The noise characteristics of the transistors are studied by the microwave measurement and analysis of physics and network parameters.
     利用 Z参数噪声网络等效电路的分析方法 ,得到了用器件 Z参数表示的微波双极晶体管噪声参数的表达式 ,通过对微波低噪声双极晶体管的高频参数进行测试和分析 ,并把器件的网络参数和物理参数相结合 ,来对器件的最小噪声系数进行计算和分析 .
短句来源
     The results show that both continuous and intermittent dynamic recrystallization exist during the deformation process.
     结果指出:钢轨钢热轧变形中存在着连续动态再结晶和间断动态再结晶,再结晶γ平均晶粒直径与变形Z参数具有良好的对应关系。
短句来源
     This result is applicable to any two- and multiple-port networks with linear or nonlinear components in sinusoidal steady state.
     最后推导得出任意二端口以及多端口网络的四个参数:Y参数、Z参数、H参数和G参数,所得结果适用于正弦稳态下任意线性非线性二端口以及多端口网络。
短句来源
     By regression analysis,activation energy and stress exponent were determined to be 378.6 kJ/mol and 5.8 respectively. The DRX grain size D_s is determined only by Z because Z controls the stored energy. The equation D_s=1.3×10~5Z~(-0.25) gives the relation between D_s and Z.
     通过回归分析,确定该齿轮钢的再结晶激活能为378.6 kJ/mol,应力指数为5.8.Z参数控制形变储存能,因而唯一地决定动态再结晶晶粒尺寸Ds,二者符合关系式Ds=1.3×105Z-0.25.
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  z parameter
The highest epicenter density is observed in the marginal parts of maxima of the μz parameter, these parts being interpreted as boundaries of rigid (sialic metamorphic and oceanic mafic) tectonic blocks and plates.
      
The overwhelming majority of crustal seismicity is spatially related to uplifts of the asthenospheric layer reflected in the minima of the μz parameter, and is concentrated in uplifted crustal blocks.
      
We show, using high field magnetisation, static and dynamic susceptibility and high frequency ESR, that the magnetic properties are driven by the z parameter.
      
Dynamic recrystallization takes place approximately in a certain range of Z parameter, i.e., 25 >amp;lt; lnZ >amp;lt; 37.
      
BLASTP searches were conducted as described for full genome searches, except for the z parameter.
      
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  z-parameter
A Z -parameter model for a probe inside a steam tube utilizing differential coils is described, and the response of Z -parameters for the differential probe under various changes in the steam tube configuration is investigated.
      
Die z-Parameter erfahren gegenüber den Werten für Magnetoplumbit PbO·6Fe2O3 eine geringe Verschiebung.
      
Some adaptive filtering techniques based on the Z-parameter and on local polynomial approximation (LPA)-intersection of confidence intervals (ICI) are discussed.
      
The relation between the dynamic recrystallization and Z-parameter has been investigated.
      


The influence of hot deformation conditions on static recrystallization behavior of a 18Ni maraging steel was studied. Using the Zener-Hollomon parameter in the dynamic recrystallization diagram for reference, a new parameter Y(=τZ~m exp (-Q_(rec)/RT) is recommended and a static recrystallization diagram put forward.

本文研究了热变形参数对18Ni马氏体时效钢静态再结晶行为的影响。基于过去的研究成果,与动态再结晶图中的Z参数相对应,本文推荐了一个Y参数,并提出了以Y参数为纵座标、形变量ε为横座标的奥氏体静态再结晶图。Y参数(=τ·Z~m·e~-(R_(rec))/(RT))的物理意义是用温度和形变速率修正了的停留时间。引进Y参数,简化了静态再结晶图的表达方式,并可为高温形变与再结晶以及形变热处理强韧化机制研究提供参考数据。

The relationship between the flow stress of austenite at ausforming temperature and the hardness of the ausformed martensite (or austenite) at room temperature was studied using martensitic steel 18CrNiW and austenitic steel 18-8. Ausforming was performed with a torsion test machine at various temperatures between 723K and 923K and strain rate of 2.5×10~(-3)/s~2.6×10~(-1)/s. After deformation, immediataly specimens were quenched by water spray. It was found that the increase in hardness of the ausformed austenite...

The relationship between the flow stress of austenite at ausforming temperature and the hardness of the ausformed martensite (or austenite) at room temperature was studied using martensitic steel 18CrNiW and austenitic steel 18-8. Ausforming was performed with a torsion test machine at various temperatures between 723K and 923K and strain rate of 2.5×10~(-3)/s~2.6×10~(-1)/s. After deformation, immediataly specimens were quenched by water spray. It was found that the increase in hardness of the ausformed austenite at room temperature (AHV~γ) is decided only by the increase in the flow stress (i. e., the amount of work-hardening) of austenite (Ao~γ) in ausforming. On the other hand, the increase in hardness of ausformed martensite at room temperature (ΓHV~(α′)) is decided by bith Δσ~γ and Z(Zener-Hollomon parameter). When Δσ~γ keeps constant, ΔHV~(α′) increases with increasing ausforming temperature (i.e., with decreasing Z). Furthermore, when the ausforming temperature is fixed, the contribution of Δσ~γ on ΔHV~(α′) is small at smaller Δσ~γ range and becomes large at larger Aσ~γ range. Present results suggest that the dislocation cell structure in austenite is very effective on the strengthening of ausformed martensite, and uniformly distributed (pileup) dislocations in austenite have only a little effect on the strengthening of the ausformed martensite.

采用马氏体钢(18Cr2Ni4WA)和奥氏体钢(1Cr18Ni9Ti)研究了低温形变淬火马氏体(或奥氏体)的室温硬度(强度的表征)与形变温度下奥氏体的流变应力间的关系。形变方式为扭转变形,形变温度为723~923K,形变速率为2.5×10~(-3)~2.6×10~(-1)S~(-1),形变量为0~160%,形变后立即喷水冷却。结果表明,形变奥氏体的室温硬度增量ΔHV~γ只单值地决定于形变时奥氏体的流变应力增量Δσ~γ(即加工硬化量)。低温形变淬火马氏体的室温硬度增量ΔHV~α′决定于Δσ~γ和Z(Zener-Hollomon参数),当Δσ~γ相同时,ΔHV~α′随形变温度的增高(即随Z参数的降低)而增大。此外,如果形变温度不变时,在Δσ~γ较小的范围内,Δσ~γ对ΔHV~α′的贡献小,而在Δσ~γ比较大的范围内,Δσ~γ对ΔHV~α′的贡献大。另外,奥氏体中的位错胞状结构对低温形变淬火马氏体的强化非常有效,而奥氏体中的均匀分布(混乱堆集)位错对低温形变淬火马氏体的强化作用则较小。

The paper mainly introduces the effect of applying Shah, s formula (1973)to compute the interval velocity of two-dimensional arbitrary dip interfaces. According to the possible variation of actual slratigraphic profile parameters ( ,v,z) .18 quit complicated layer models weJe designed to compute many times, the results were compared withthat of Dix formula.lt shows that it then is more appropriatly to use Shahs formula to compute the interval velocity of arbitrary dip interfaces.

本文主要介绍沙赫(Shan,P.M.)公式,对二维任意倾斜地层的层速度计算的应用效果。依据实际地层剖面Φ、V、Z参数的可能变化,设计18个较为复杂的地层模型进行了大量试算,并与Dix公式计算结果作了对比,表明对任意倾斜地层应采用沙赫公式提取层速度才是适宜的。

 
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