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时间函数的
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  time function
     Further,it is developed to a general WHT of time function with N(≠2~p)samples,id est the generalized tramform from N-dimensional vector space to 2~p-dimension vector space.
     进一步将其推广为一般性的 N(≠2~p)点时间函数的 WHT,即由 N 维矢量空间到2~p维矢量空间的广义变换。
短句来源
     A New Algorithm for Reliability Simulation Based on Failure Time Function
     基于失效时间函数的系统可靠性数字模拟算法的研究
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     After analyzing the basis on the model of dynamic traffic assignment and the generic form of the dynamic link travel time function in the dynamic network model, the paper analyses and compares some discrete dynamic link impedance functions used in abroad as well as in our country, and point out their advantages and disadvantages.
     本文在分析了动态交通分配的建模基础和动态交通网络模型中的动态路段行程时间函数的一般形式之后,用实例分析和对比了国外常用的几种离散型动态路阻函数,并指出其优缺点。
短句来源
     STUDY ON TIME FUNCTION OF SURFACE SUBSIDENCE —— THE IMPROVED KNOTHE TIME FUNCTION
     关于地表点下沉时间函数的研究——改进的克诺特时间函数
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     Making the expected function extended as Fourier stages of an axis coordinate with its coefficient as an expected time function, by the orthogonality of Fourier stages the two-slage constant differential equation to calculate the unknown time function is thus obtained, which is completely similar to evolution function of single free state particle under a linear viscous damping with a given solution.
     把待求函数展成梁轴坐标的Fourier级数,其系数为待定的时间函数,应用Fourier级数的正交性,得到求解未知时间函数的二阶常微分方程,完全类似单自由度质点在线性粘滞性阻尼作用下的统辖方程,其解为已知。
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  time functions
     The results are as follows: The directivity of source time functions retrieved from P-and S-waves indicate that the nodal plane striking 199° is the fault plane, and that the earthquake ruptured unilaterally from the northeast to the southwest.
     从P波和S波提取的震源时间函数的方向性效应都清楚地表明 :走向为 199°的节面为断层面 ,地震是从东北向西南方向的单侧破裂。
短句来源
     The result obtained in this study shows that:The source time functions retrieved from P- and S-waves recorded at different stations distributed at different azimuths show prominent directivity.
     结果表明:从不同方位台站的Z分向P波和SH波提取的震源时间函数显示了明显的方向性效应。 震源时间函数的这种方向性效应与P波的方向性效应相一致,清楚地表明:走向为199°的节面为断层面,地震是从东北向西南方向单侧破裂的。
短句来源
     In the case that the dynamie regression coefficients are linear combination of some time functions,the estimation of dynamic regression coefficients is obtained and two advantageous properties of the estimation are proved.
     在动态回归系数可表示为某些时间函数的线性组合时,导出了回归系数变化规律的估计表达式,并证明了该估计的两条优良统计性质。
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     In this thesis, we discuss how to estimate radiated energy based on source time functions obtained directly from seismograms.
     本文利用实际地震观测中得到的震源时间函数讨论了地震辐射能量的测定问题。 用三角形函数作为实际震源时间函数的简化,估算了一些地震的辐射能量。
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     We also compare the time functions obtained with P, SH or whole waveform data, respectively, and find that the time functions obtained with SH and whole waveform are coherent, while the time function obtained from P waveform data is different in amplitude.
     同时用全波、P波和SH波进行提取震源时间函数的对比,结果表明,用全波和SH波效果较好,所得结果非常一致,而用P波提取的震源时间函数效果不很理想。 即同一台站的不同震相求得的震源时间函数的幅度存在差异。
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  functions of time
     For the 2+1 dimensional integrable KZ equation'a set of infinitely many trun-cted symmetries with infinitely many arbitrary functions of time are obtained by using formal series symmetry method.
     对于2+1维的可积的Khokhlov-Zabolotskaya方程,利用形式级数对称的方法,得到了一包含无穷多任意时间函数的无穷多截断对称。
短句来源
     Secondly, by using the method of separation of variables, the quantity that the displacement subtracts the special function is expanded as the multiplication series of Bessel function and the unknown functions of time. Thirdly, by virtue of the orthogonal properties of Bessel functions, the equations about these unknown functions are derived and the solutions are obtained. Finally, the elastodynamic solution of the hollow cylinder is obtained.
     对于均匀弹性空心圆柱,首先通过引入一特定函数将非齐次边界条件化为齐次边界条件,然后利用分离变量法将位移减去特定函数的量展开为关于贝塞尔函数和时间函数乘积的级数,并由贝塞尔函数的正交性,导出时间函数的方程,容易求得此方程的解,最终可求得弹性空心圆柱动力学问题的位移解。
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     Under the assumptions that the stocks price process is driven by the Levy jump diffusion process , and the risk-free rate τ(t) and the volatility σ (t) are functions of time ,we obtain the pricing formula and put-call parity of the European option .
     在假定股票价格过程遵循几何Levy过程,并且股票预期收益率、波动率和无风险利率均为时间函数的情况下,获得了欧式期权精确定价公式和买权与卖权之间的平价关系.
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  “时间函数的”译为未确定词的双语例句
     Results:The rabbits blood concentrations of rhbFGF after a fast iv injection showed the characteristic of the first class kinetics of the model of two compartments. The analytic equation was Ct=90.1156e-2.0107t+13.0707e-0.1783t.
     结果:家兔静脉一次快推给药后血中rhbFGF浓度属双室模型一级动力学特征,其血药浓度-时间函数的解析表达式为:Ct=90.1156e-2.0107t+13.0707e-0.1783t。
短句来源
     Software Testing Cost Model with Fault Removal Efficiency Function of Time
     排错效率为时间函数的软件测试费用模型
     DOUBLE SHEAR EXPERIMENT OF ROCKS AND STUDY OF SEISMIC SOURCE-TIME FUNCTION
     岩石的双剪摩擦及震源时间函数的实验研究
短句来源
     To verify the stability and dependability of function of focus time, we use the UD、EW and NS component digital records of 5 aftershocks as experiential Green′s function, respectively, and get the unanimous results.
     为了验证所提取的震源时间函数的稳定性和可靠性,作者用5个小余震的UD,EW,NS方向分别作经验格林函数处理,结果相当一致;
短句来源
     Aim at the problems that the inputs and outputs of some practical nonlinear systems are Continuous time signals,we brought forward a Continuous process neuron and process neural networks model.
     针对输入/输出均为连续时间函数的非线性系统信号处理和建模问题,提出了一种连续过程神经元和过程神经元网络模型.
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  time function
Its effective solution is obtained only when the longitudinal pressure gradient is given as an arbitrary time function.
      
However, in practice we encounter cases when the flow rate is a known time function.
      
The frequency spectrum of a ferromagnet magnetization has been analyzed as a time function.
      
Determination of the capacity ratio and concentration-time function for stepwise elution with binary mobile phase with help of l
      
A method for the calculation of the capacity ratio and concentration-time function, basing on the theory of gradient elution chromatography, is examined by using high-speed liquid chromatography data.
      
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  time functions
The coefficients of the aerodynamic forces acting on the body are calculated as time functions; in the case of free oscillations the paths of the body and the instantaneous velocities of the oscillatory motion are calculated.
      
A representation of the solution of the heat-conduction equation is examined in the form of a series, arranged in increasing order of derivatives of boundary time functions.
      
A solution in the form of a series in time functions and polynomials of the space coordinate is obtained using as an example the moisture conduction equation with allowance for the finite rate of capillary motion.
      
Expressions for the required time functions are determined in accordance with prescribed boundary and contact conditions by means of the Laplace transformation.
      
In this regard, we consider the amplitude spectra of five different time functions.
      
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  functions of time
Article [3] examined deceleration in an exponential atmosphere of a body whose shape and size are given functions of time.
      
Equations for the change in the volumes of the air bubbles as functions of time and velocity distribution in the liquids are obtained for the case when the radius of the capillary is much less than the lengths of the liquid columns.
      
We study systems of differential equations with perturbations that are unbounded functions of time.
      
This model enables one to determine the thickness of the adsorption-solvation shells on solid-phase particles and also the concentrations of the components of the dispersion (continuous) phase as functions of time.
      
In this case, the phonons are shown to occur in a nonclassical state in which their fluctuational properties, different in various quadratures, are described by periodic functions of time.
      
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A more general mathematical analysis of the kinetics of polycondensation-depolycondensation reactions is given in the article. Three different types of reactions are considered, namely, (1) reactions between molecules AB and AB, (2) reactions between molecules AA and BB, (3) reactions between molecules AA and BC. One of the condensation products is assumed (without loss of generality) to be water.For reactions of the first type, [p_n], the number of molecules of the n-mer (AB)_n, obeys the following Flory distribution:...

A more general mathematical analysis of the kinetics of polycondensation-depolycondensation reactions is given in the article. Three different types of reactions are considered, namely, (1) reactions between molecules AB and AB, (2) reactions between molecules AA and BB, (3) reactions between molecules AA and BC. One of the condensation products is assumed (without loss of generality) to be water.For reactions of the first type, [p_n], the number of molecules of the n-mer (AB)_n, obeys the following Flory distribution: [p_n]=N_0p~(n-1)(1-p)~2 where N_0 denotes the total number of AB segments (including the unreacted monomers). and p, as defined by is a measure of the degree of condensation. It is shown that p is the solution of the following differential equation: dp/dt=k/2N_0(1-p)~2-k_(-1)p[H_2O] where K and k_(-1) are velocity constants of condensation and hydrolysis respectively, and [H_2O] denotes the number of water molecules. Three special cases are discussed.For reactions of the second type, three different types of condensation products are possible besides water; they obey the following distributions: [p_(2n)]=2N′_0r~(n-1)p~(2n-1)(1-p)(1-rp) [p′_(2n-1)]=N′_0r~(n-1)p~(2n-2)(1-p)~2 [p″_(2n-1)]=N′_0r~(n-2)p~(2n-2)(1-rp)~2 where N′_0 and N″_0 denote the total number of segments AA and BB respectively, r denotes the ratio N′_0/N″_0, and p, as defined by is the solution of the following differential equation: dp/dt=kn′_0/r(1-p)(1-rp)-k_(-1)P[H_2O]For reactions of the third type, six different types of condensation products are possible besides water; they obey the following distributions: [P′_(2n)]=NP~(n-1)q~n(1-p/2-q/2)(1-p) [p″_(2n)]=Np~nq~(n-1)(1-p/2-q/2_(?))(1-q) [p_(2n-1)=Np~(n-1)q~(n-1)(1-p/2-q/2)~2 [p′_(2n-1)]=N/4p~(n-2)q~n(1-p)~2 [p″_(2n-1)]=N/4p~nq~(n-2)(1-p)~2 [p′″_(2n-n)]=∈(n)N/4p~(n-1)q~(n-1)(1-p)(1-q),where N denotes either the total number of segments AA or that of BC, while p and q, as defined by satisfy the following set of differential equations: dp/dt=k′N/2(1-p)(2-p-q)-k′_(-1)p[H_O] dq/dt=k″N/2(1-q)(2-p-q)-k″_(-1)q[H_2O]

本文討論AB型,AA和BB型以及AA和BC型分子间的缩聚-裂解反應,由動力学方程出發,得到这三种类型反應过程中高聚分子的分佈情况,并求得几种不同反應條件下的缩聚度p和q是何种時间的函数,利用它们和实验数值比較,可以求得縮聚反應速度常数K和水解反應速度常数k_(-1),并在AA和BC型分子间的反應中,可以求得K'和K″的此值,藉以比较官能團B和C的活潑度。还討論了三种平均分子量的表示式、数值以及它们相互的比值,後者僅在没有水解作用的情况下,才和Flory的结果相同。

This paper aims at deriving a simple and reliable method for the determination of cyclic variation of exhaust gas pressure and temperature before turbine of an impulse-charged diesel engine, in order to facilitate the design of exhaust gas turbine. A succinct explanation on the process of the formation of exhaust impulse in exhaust pipe of a diesel engine with pulse system is made. In consideration of the characteristics of a two-stroke engine and also following the analysis of experimental data, it has been...

This paper aims at deriving a simple and reliable method for the determination of cyclic variation of exhaust gas pressure and temperature before turbine of an impulse-charged diesel engine, in order to facilitate the design of exhaust gas turbine. A succinct explanation on the process of the formation of exhaust impulse in exhaust pipe of a diesel engine with pulse system is made. In consideration of the characteristics of a two-stroke engine and also following the analysis of experimental data, it has been found that in large and medium sized two-stroke diesel engines the exhaust pipe is all over under the same instantaneous pressure during most of the scavenging period, and is only a function of the time, thus the phenomenon can be regarded as the process of filling and evacuating the chamber of the exhaust pipe. It has also been found that the temperature is not only a function of the pressure but also to a agreat extent influenced by the displacement of the gas layers in pipe. In case of a pipework branches, there exist two gas zones with different temperatures. Study has also been made to the influence of the propagation of gas state variations on gas state at the beginning period of the formation of exhaust impulse. Basing on the above considerations, by a series derivation from the basic equation of Glagolev and the equations for the determination of the state variation of mixed gases in a container, the required formulas have been obtained. The particular items of the formulas can be regarded as particular functions, for which tables and graphs are provided for use. By using the step-by-step integration, it is easy to determine the variation of the exhaust gas pressure and temperature before the turbine, and the same can be used as basis to design the exhaust gas turbine of an impulse-charged engine. The calculation can also be made speedily by an electronic computer. In this paper, tentative calculation has been made on 3EDZ 43/67 type engine, with a result showing that there is only a small deviation between the figures of calculation and those of the actual measurement. It is expected that this method of calculation of exhaust-impulse in pressurecharged two-stroke diesel engines will provide practical value in engineering.

本文的目的是在发动机的設計阶段,给出一种簡便可靠的方法,計算出廢气渦輪前周期变化的气体压力和温度,以作为脉冲廢气渦輪設計工况选择的依据。文中对柴油机脉冲增压系排气管中排气脉冲的形成过程作了簡单明确的說明。从二冲程柴油机的特点出发,在分析了实驗資料后,认为在二冲程大、中型柴油机上;在大部分的时間段内,排气管中各处的压力在同一时刻是相同的,和它只是时間的函数。这样,現象可視为充填和排空排气管容积的过程。同时又认識到温度不仅是压力的函数,而且很大程度上决定于气流层的位移,在排气管有分枝的場合下,排气管中分成了两个不同的温度区。在計算方法中也考虑了在排气脉冲形成的开始阶段排气系统中气体状态变化的傳播对气体状态的影响。基于这些认识,由格拉高列夫基本方程式和确定混合气体状态的方程式,經过一系列具体的处理和推演,得到了計算公式。公式中的一些特定項被归納为特定函数,并预先作成通用的图表。由公式用逐段积分法列表计算可以很方便地求出廢气渦輪前排气管中气体的压力变化和温度变化,可以作为脉冲廢气渦輪設計的依据。文中并对3EDZ43/67柴油机进行了计算,計算結果与实驗結果的比较表明误差很小,本計算方法在工程上是有实际参考价值的。

The effect of decarburizing process on the magnetic properties of the grainoriented 3%Si-Fe has been studied. An empirical expression for the rate of decar-burization under given conditions was proposed. While the time of decarburizationwas given, the carbon content in 3%Si-Fe might be predicted, and vice versa.Another empirical expression for the rate of grain growth was also derived fromobservation of normal grain growth during decarburization. Based upon the aforementioned expressions, the functional dependence...

The effect of decarburizing process on the magnetic properties of the grainoriented 3%Si-Fe has been studied. An empirical expression for the rate of decar-burization under given conditions was proposed. While the time of decarburizationwas given, the carbon content in 3%Si-Fe might be predicted, and vice versa.Another empirical expression for the rate of grain growth was also derived fromobservation of normal grain growth during decarburization. Based upon the aforementioned expressions, the functional dependence of thecarbon content before secondary recrystallization and time required for decarburi-zation on final magnetic properties of the grain oriented 3%Si-Fe has been dis-cussed. A two-demensional plot was then drawn on which the decarburizing pro-cess would be easily determined to acquire materials of superior quality.

3%Si-Fe中适量碳的存在,对细化热轧板晶粒,稳定初次再结晶基体都起到有利的作用.一旦初次再结晶完成后,碳作为“有利元素”的历史作用即告结束,它的继续存在不仅阻碍二次再结晶的顺利进行,更严重恶化成品磁性,特别是使磁时效极为显著.所以,二次再结晶以前的脱碳对于成品的质量至为重要. 本实验对脱碳过程进行了较详细的研究,导出了给定条件下脱碳速率的经验公式.根据此公式可由给定的脱碳时间,预测碳含量,反之亦然.同时,对脱碳过程中晶粒的正常长大也进行了研究,并给出了描述晶粒长大速率的公式.基于上述研究,讨论了二次再结晶前的碳含量、脱碳时间(晶粒尺寸)与材料最终磁性的相关性.磁性与碳含量、脱碳时间的函数关系用平面图形显示.利用此图形可直观、便捷地选择获得最佳性能的脱碳工艺.

 
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