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  a finite
     The TbDyFe/PZT laminate composites were prepared by magnetron sputtering, and the ME coefficients α_E were examined experimentally and calculated by using a finite element analysis software.
     用磁控溅射方法制备了TbDyFe/PZT层状复合材料,实验测试了TbDyFe/PZT两层及TbDyFe/PZT/TbDyFe三层复合材料的磁电电压系数随周期磁场频率的变化关系,并采用有限元数值计算方法对两种材料的磁电电压系数进行了计算.
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     The method of internal force calculation for pile foundation of port engineering stipulated in "Code for Pile Foundation of Port Engineering"(JTJ254-98) and "Code for Foundation Design of Highway, Bridge and Culvert"(JTJ024-85) is discussed. Combining an example of calculation, it presents a finite element analysis method for internal force calculation of pile foundation with computer.
     讨论《港口工程桩基规范》(JTJ2 5 4 - 98)、《公路桥涵地基与基础设计规范》(JTJ0 2 4 - 85 )桩基内力的计算方法 ,结合算例 ,提出运用计算机采用有限元分析进行桩基计算的方法。
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     A 3d LU-SGS computational code is developed to solve the hypersonic flows, which is modeled by the compressible Reynold averaged three-dimension Navier-Stokes equations and with a use of a finite volume formulation, the convective parts are discretized with the Harten TVD scheme, turbulent effects are modeled utilizing Menter SST tow equation turbulence model.
     本文数值方法基于Reynold平均的Navier-Stokes方程,采用有限体积法离散计算区域,对流项使用Harten TVD格式进行流场求解,湍流部分应用Menter SST两方程湍流模型,建立了隐式LU-SGS方法的求解三维计算程序,用来模拟高超声速流场。
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     Forty multiple tubular DT joints with brace subjected to axial load and outof-plane bending moment are analyzed by a finite element method to determine the influence of geometric parameters on the local stress of the joints.
     本文采用有限元法对在轴力与面外弯矩作用下的40只空间DT型管节点的应力分布进行计算,用以确定空间DT型管节点的拘束度参数对节点局部应力的影响。
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     In order to simulate the flow field around parachute during terminal descent, a finite volume method and Spalart-Allmaras turbulent model are used to solve N-S equations.
     文中采用有限体积法求解不可压流的N -S方程 ,采用Spalart-Allmaras(SA)模型作为湍流模型 ,以模拟降落伞稳定下降阶段时的流场特性。
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  “采用有限”译为未确定词的双语例句
     Three dimensional structural shape optimization Using finite element analysis──Optimal design for the foundation of a Iarge machine tool
     采用有限单元分析的三维结构形状优化──大型机床基础的优化设计(一)
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     The Elastoplastic Analysis by the Coupling of Boundary Element Method to Finite Element Method
     采用有限元-边界元耦合方法计算弹塑性应力
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     To Setup Exterior Aerodynamic Field Modelof No.3 Dry Cooling Towerin Feng zhen Thermal Power Plant Using Finite Element Method
     采用有限元法建立丰镇电厂3号空冷塔外空气动力场模型
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     In this paper, of automobile frame feature and its material property,according to the requirement an optimal mathematical model is set up by use of combining the method of finite element analysis and the structural topology optimization design.
     采用有限元分析和结构拓扑优化设计相结合的方法,依据汽车车架的结构受力特性及其材料的性能要求,建立了优化数学模型。
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     The extrusion process of AZ31 magnesium alloy was studied by using FEM simulation and experimental validation.
     采用有限元模拟和实验验证相结合的方法对AZ31镁合金十字型材挤压过程进行研究。
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     Tetrahydrocarbazoles have been prepared according to W.
     采用W.
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     The compressed encoding of speech is implemented with G.
     采用G.
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     finite.
     -有限 .
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     A finite element model has been used to analyze the sheet metal deep drawing process by the FE software, MSC.
     采用有限元软件MSC.
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     A numerical simulation of the drawing process of vibration damping steel sheet(VDSS)is investigated by FE software,MSC.
     采用有限元软件MSC.
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  a finite
In all these cases we actually show that Γ=π1(M) has a finite index subgroup which is mapped onto a nonabelian free group.
      
Using these monomial bases we prove that the image of the transfer for a general linear group over a finite field is a principal ideal in the ring of invariants.
      
We prove the following result: LetG be a finite irreducible linear group.
      
The first one is a conjecture of Ian Hughes which states that iff1, ..., fn are primary invariants of a finite linear groupG, then the least common multiple of the degrees of thefi is a multiple of the exponent ofG.
      
More precisely, each orbit of the above action intersects one componentX ofQ in a finite number of points and the action of PGL4 restricted on each componentX is equivalent to the action of a finite groupGX onX which can be explicitely computed.
      
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The finite difference equations are applied in this paper for the analysis ofcaisson-beam, which is composed of two intersecting sets of parallel beams,namely the longitudinal beams and the transversal beams. Two cases of caisson-beam have been discussed in this paper. In the first case, all the 1ongitudinalbeams are arranged in equidistance and have the same stiffness, all the trans-versal beams are also arranged in equidistance and have the same stiffness. Byusing the method of redundant forces and deformations,...

The finite difference equations are applied in this paper for the analysis ofcaisson-beam, which is composed of two intersecting sets of parallel beams,namely the longitudinal beams and the transversal beams. Two cases of caisson-beam have been discussed in this paper. In the first case, all the 1ongitudinalbeams are arranged in equidistance and have the same stiffness, all the trans-versal beams are also arranged in equidistance and have the same stiffness. Byusing the method of redundant forces and deformations, we obtain a set ofsimultaneous partial finite difference equations, where the deflections of the jointsand the bending moments of longitudinal beams and transversal beams at jointsare unknown functions. The finite sine series are used in the solution of theseequations. In the second case, all the transversal beams are arranged inequidistance and have the same stiffness, while the longitudinal beams arearraseed in arbitrary distances and have different stiffness. By using the methodof redundant forces, we obtain a set of simultaneous ordinary finite differenceequations, where the bending moments of the longitudinal beams at joints areunknown functions. The general method for solving these equations has beendiscussed.

本文用差分方程解交叉梁系(井字梁)。交叉梁系中的一组平行梁称为横梁,而另一组平行梁称为纵梁。本文解两种交叉梁系。第一种是所有横梁断面惯性矩相同、间距相等,所有纵梁断面亦然。用结构力学中的混合法,取结点挠度和横梁、纵梁在结点的弯矩为未知数,得到一个联立偏差分方程组。解这个联立偏差分方程组采用了有限三角级数,并分成三种情况讨论它们的解,即四边简支,两对边简支其他两对边任意支承,四边任意支承等。第二种交叉梁是所有横梁断面惯性矩相同、间矩相等而纵梁的断面惯性矩、间距则是任意的。用结构力学中的冗力法,取纵梁在结点处的弯知为未知函数,得到一个联立常差分方程组。本文讨论了这个方程组的一般解和纵梁两端为简支时的有限三角级数解。

The expedient quantities of reserved working faces for regulating interference has been calculated by The ory of Queue in this paper.Suppose that the input and output are in Poisson and negative exponential distri-bution respectively, and the service takes as soon as interference appears, the text has used a queuing model with limited input for calculation.Regarding to the interval between the time to finish driving the next working face and the time to finish working theprevions one as a random variation with...

The expedient quantities of reserved working faces for regulating interference has been calculated by The ory of Queue in this paper.Suppose that the input and output are in Poisson and negative exponential distri-bution respectively, and the service takes as soon as interference appears, the text has used a queuing model with limited input for calculation.Regarding to the interval between the time to finish driving the next working face and the time to finish working theprevions one as a random variation with normal distribution, the most available predeterminate quantity of driving before working has been calculated.The last results obtained on the basis of mathematical analysis would be conve-nient for practical use.

本文系用排队论的方法来计算应付故障的合理备用工作面数目.在计算中,采用有限输入,随到随服务的概型,输入流和输出流各按泊松和负指数分布. 此外,文中将新工作面的掘成和旧工作面采完日期之差,看成是一个正态分布的随机变量,从而计算出最有利的预期超前掘进量. 在数字分析的基础上,所导出的计算采掘平衡的方法,实际应用时也很简便.

The paper introduces four fundamental circuit diagrams and their principles of rudder steer follow-up system.With a view to reduce the capacity of electrical machines in the system,the author analyses the function of saturated extent of magnetic circuit of the generator,the non-load characteristic of the excitor and the mechanical characteristic of the motor.Besides,in selecting the capacity of electrical machine,the correct duty rating of electrical machine,working environment and practical resistance-torque...

The paper introduces four fundamental circuit diagrams and their principles of rudder steer follow-up system.With a view to reduce the capacity of electrical machines in the system,the author analyses the function of saturated extent of magnetic circuit of the generator,the non-load characteristic of the excitor and the mechanical characteristic of the motor.Besides,in selecting the capacity of electrical machine,the correct duty rating of electrical machine,working environment and practical resistance-torque curve of the rudder-stock should be taken into consideration. Advanced technique and economical indexes in driving system of the rudder steer can be obta- ined through corrective seleetion of a gear ratio of transmission gear and rate speed of the motor, while an optimum gear ratio depends upon the least stored energy of running parts. In calculation of the transitional state characteristics,the author suggests the rule for discr- iminating the stability of a simplified linear follow-up system.With the help of property equation, further research on the effect of parameters upon stability may be made.For non-linear follow-up systems,the author considers that the electrical-mechinical transitional state of follow-up system may be obtained through the calculation of the differential equations by applying the limited multiplication method in order to observe the performance of driving system and its stability. Based upon practical experience,common problems of regulation and regulated methods have been summarized,of which the regulation of excited windings in the exeitor and the balanced resistors are emphatically pointed out.It has been found that the feed-back winding of the genera- tor has an effective result to reduce remained magnetism of the generator and overcoming“crept” of the motor produced by remained magnetism. The standard series of rudder steer follow-up system should possess the least grade of power,the most universality and the wide range of application.Through practice,the author suggests some circuit diagrams of rudder steer follow-up system and some opinions about the design of electrical machines.

本文介绍了四种基本的舵杌随动控制电力拖动系统的线路和原理。从降低系统中各电机容量的这个要求出发,分析发电杌磁路饱和程度、激磁机空载特性、电动机机械特性对拖动系统中各个电机的容量选择的意义。此外,在选择电机容量时,还必须考虑电机的确切工作制、工作环境和实际的舵杆阻力矩曲线。正确地选择电动机的额定转速和传动装置的传动比,可以获得舵机拖动系统的先进的技术经济指标,而传动装置的最佳传动比是以转动部分储能最少的原则来确定的。在动态特性的计算中,作者提出了简化的线性随动舵机稳定性判别法则,通过其中的特征方程式,还可以研究系统中各参数对于稳定性的影响。对于非线性直流同拍式随动舵机,作者认为采用有限增量法,通过对于十个独立的微分方程的运算,可以描绘出该随动舵机的电气、机械过渡过程,以此便能观察拖动系统的运行过程和稳定性。文章最后,根据实际经验,总结了调整的一般问题和调整方法,其中着重指出对于激磁机二组磁通方向相对的激磁绕组和平稳电阻的调整。经验表明:发电机电压负反馈绕组对于减弱发电机的剩磁和克服由此而产生的电动机的“爬行”会有显著的效果。作者认为随动舵机的标准系列应该具有最少的功率等级、最大的通用性和最大的应用范...

本文介绍了四种基本的舵杌随动控制电力拖动系统的线路和原理。从降低系统中各电机容量的这个要求出发,分析发电杌磁路饱和程度、激磁机空载特性、电动机机械特性对拖动系统中各个电机的容量选择的意义。此外,在选择电机容量时,还必须考虑电机的确切工作制、工作环境和实际的舵杆阻力矩曲线。正确地选择电动机的额定转速和传动装置的传动比,可以获得舵机拖动系统的先进的技术经济指标,而传动装置的最佳传动比是以转动部分储能最少的原则来确定的。在动态特性的计算中,作者提出了简化的线性随动舵机稳定性判别法则,通过其中的特征方程式,还可以研究系统中各参数对于稳定性的影响。对于非线性直流同拍式随动舵机,作者认为采用有限增量法,通过对于十个独立的微分方程的运算,可以描绘出该随动舵机的电气、机械过渡过程,以此便能观察拖动系统的运行过程和稳定性。文章最后,根据实际经验,总结了调整的一般问题和调整方法,其中着重指出对于激磁机二组磁通方向相对的激磁绕组和平稳电阻的调整。经验表明:发电机电压负反馈绕组对于减弱发电机的剩磁和克服由此而产生的电动机的“爬行”会有显著的效果。作者认为随动舵机的标准系列应该具有最少的功率等级、最大的通用性和最大的应用范围。通过初步实践的总结,作者提出随动舵机标准系列的建议线路和对电机设计、装置结构等方面的若干意见。

 
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