The space-wave method, suitable for extended surface targets, is a preferable method for permittivity measurement of ground materials at microwave frequencies.
空间波法适合于测量大面积目标的介电常数，所以是测量地物微波介电特性的一种较好的方法。
The multi polar coordinate and complex function are used to put forward an approximate analysis method for scattering of steady P wave around a circular lining in half space.
本文采用多极坐标和复变函数方法针对半无限空间中P波在一衬砌周围的散射问题提出了一种近似求解分析方法。
This paper analyses the sound decay in an acoustically treated rectangular space from the view point of wave acoustics. and a new method of calculating complex eigenvalue is given.
本文从波动声学观点出发，分析了矩形水池中声能的衰变，给出了一种解算复本征值的新方法。
An analytical series solution for dynamic stress concentration of lined cavities in a half space under incident plane SV waves was given by using wave function expansion method.
采用波函数展开法给出了半空间中衬砌洞室群在平面SV波入射下动应力集中问题的一个级数解析解。
The presented phase Angle PWM method is centering attention on motor stator voltage space vector and controls the vector Angle to vary linearly and so reduces higher harmonics in voltage wave.
本文提出的角度PWM方法着眼于电机的定子电压空间矢量，使其矢量角均匀变化，减小电压波形中的高次谐波分量。
TheAbstractfeasibility of this method is testified through the example of wave source problems on the three dimensions in full space.
并通过全空间三维波源问题的算例验证了这一方法的可行性。
The equivalence principle and moment method are used to derive the expression of equivalent magnetic current in the main cavity excited by the plane wave in the half-space.
利用等效原理和矩量法导出了由半空间中平面波在主谐振腔中激励的等效磁流的表达式；
An analytic method is developed for the problem of scattering of SH-wave and dynamic stress concentration around a circular cavity near the interface of elastic half space.
建立了求解在含有圆形孔洞的弹性半空间中SH波散射与圆形孔洞附近动应力集中问题的解析方法。
The effect of the differential strata in half-space on the damping is analyzed by theory of wave scattering, and the practical calculation method is presented.
并由波的散射原理，分析了土层差异对半空间阻尼的影响效应，提出了工程实用计算方法。
In this paper, a finite element method with lumped mass formulation is applied to analyse the transient SH wave propagation in an elastic half-space with a dipping layer.
本文采用一种类似于差分方法的集中质量有限元模型和人工边界透射理论分析倾斜成层弹性半空间中瞬态SH波的近场波动问题。
Discusses the application of Minimum Variation Method (MVM) in extracting sea echo's space spectrum from HF Ground Wave Radar (GWR) 's detection.
论述了将最小方差法应用于高频无线电海洋探测中的一些处理方法和结果。
The propagation of explosive seismic wave in half-space is calculated by applying incomplete separation variable method, so the movement fields of response of ground particles are received.
运用不完全分离变量法的理论计算爆炸地震波在半空间内传播，得到地表质点响应的运动场。
A 1d finite element method in time domain is developed, where the wave motion of free field in elastic half-space by SH wave oblique incidence is simulated.
提出了一种计算出平面SH波斜入射时弹性半空间自由波场时域计算的一维化有限元方法。
Based on the finite element method (FEM), the negative-refraction (NR) property is demonstrated when the electromagnetic wave penetrates through free space into such SNG lamellar structure.
基于有限元方法，验证了当电磁波穿过此结构时的负折射性质。
Based on the finite element method (FEM), the negative-refraction (NR) property is demonstrated when the electromagnetic wave penetrates through free space into such SNG lamellar structure.
基于有限元方法，验证了当电磁波穿过此结构时的负折射性质。
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