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medium相关的网络例句

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A new method based on the Fourier-Bessel series is proposed to calculate the higher-order harmonic components of a nonlinear ultrasound field in absorbing medium and an analytical solution of a series form is obtained. A closed analytical solution of the higher-order harmonics in the zeroth-order Bessel ultrasound field and the focused Gaussian ultrasound field is deduced to study the field property, especially the near-field property.

提出了一种基于Fourier-Bessel级数的新方法,用于计算吸收媒质中非线性超声场的高次谐波分量,得到其级数形式的解析解,由此推导出吸收媒质中零阶Bessel超声场、Gauss聚焦超声场高次谐波的封闭解析解,进而对其声场特性尤其是近场特性进行了研究。

Finite-difference time-domain method was used to simulate the coupling processes of ultra-wide-band electromagnetic pulses into a cavity with a slot, and an anisotropic perfectly matched layer absorbing medium was inserted to truncate the computational lattices.

用时域有限差分法模拟超宽带脉冲入射时与目标腔体上的孔缝相耦合的过程,用单轴各向异性的完全匹配层吸收边界条件截断时域有限差分网格。

The fundamental and higher-order harmonic ultrasound fields of a zeroth-order Bessel ultrasound field and focused Gaussian field in absorbing medium are computed and simulated by solving the KZK equation using a frequency domain finite difference method.

通过频域有限差分方法求解KZK方程,对吸收媒质中的零阶Bessel超声场、Gauss聚焦超声场进行计算,得到基波和高次谐波声场的数值解和仿真图,计算仿真结果验证了上述的理论结论。

In this paper, on the base of paraxial approximations, we present a set of absorbing boundary conditions of 3D elastic wave equations and apply to the 3D elastic wave numerical modeling in isotropic medium.

本文基於傍轴近似法提出了计算三维弹性波方程的吸收边界条件公式,表示了各边界面、边棱和角点处波场所满足的单程波方程,并在三维弹性波数值模拟中进行了应用。

The full space calculation model, which suits for the asymmetric structure sometimes even including air below the surface of medium, can enable simulative result to approach real one. The FDTD algorithm based on the mixed ABCs is proper to calculate the transmission line where the electromagnetic wave is transmitted in order to send electromagnetic energy along central conductor. The calculation efficiency will be raised if the PML absorbing boundary condition is set on both planes of transmitting direction and so is the MUR two-order absorbing boundary condition in the other planes.

全空间计算模型是适合所有的不对称结构的待研究体的,而且包括了介质下面的空气部分,使仿真更加的接近实验真实情况;基于MUR-PML混合吸收边界条件的时域有限差分法非常适合计算传输线这种结构,因为传输线是传送电磁波的,电磁能量主要是沿着中心导带行进,因此在两个传输端面上设置PML完全匹配层吸收边界条件,在其他面上设置MUR二阶吸收边界条件,会大大提高计算效率,而且计算结果与XFDTD仿真软件计算结果相比较,基本趋于一致。

A novel composite model is put forward for humidity-sensitive material based on Maxwell-Garnett and effective medium theory. The analytical expression of the relation between effective refractive index and relative humidity is shown with different absorption factors and porosities. The larger the absorption factor is, the higher the refractive index is.

在综合分析了Maxwell-Garnett理论和有效介质理论的基础上,针对半导体湿敏陶瓷材料提出了一种新颖的复合模型,给出了以吸附参数和陶瓷材料气孔率为变量的薄膜折射率随湿度变化的理论关系。

A study of determining the microwave absorptivity of a medium.

测量介质微波吸收的实验研究。

In ethanol medium, The molar absorptivity is 6.99×10^4 Lmolcm^(-1) at 550 nm.

银含量在0~1.2gmL^(-1)范围内符合比尔定律。

In ethanol medium, the molar absorptivity of the chelate is 7.82×10^3Lmol^(-1)cm^(-1) at 595 nm.

在乙醇介质中,络合物最大吸收波长λmax=595 nm,ε=7.82×10^3Lmol^(-1)cm^(-1)。

Therefore, the financial support of small and medium-sized enterprises has been attracting the finance field and academia.

因此,中小企业的金融支持问题成为了我国金融界和学术界亟待解决的问题。

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但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

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