本文用特征线法研究了碱水二维渗流的对流模型，给出了碱水浓度非线性波传播公式。
We study the two-dimensional model of alkaline pulses by using the method of characteristics. The formulae of the nonlinear concentration waves are presented.
另一方面又利用矩阵理论等推导出含有二次项的非线性函数的协方差传播公式的矩阵形式。
On the other hand, it also derives the covariance propagation formula of non-linear function containing quadratic term in matrix form using the matrix theory etc.
采用邻域传播的思想，为每个水结点增加一个速度参数，推导出水面受到扰动后，水波的演变公式。
Increasing a speed parameter for each water node, we adopt the idea of neighboring regions spread to derivate the evolution formula of water wave with disturbance.
给出了公式推导，计算了扩散各向同性及扩散各向异性平面光波导的传播特性，并与其它方法所得结果进行了比较。
By using this method, the characteristics of propagation for diffused planar waveguides are calculated and compared with the finite element method.
分析甚低频电磁波传播路径与方式，给出场强的计算公式。
By analyzing transmission pathway and mode of VLF radio wave, calculation formula of field intensity is given.
研究模糊推理的问题，提出了一种真值传播的计算公式与方法。
Study on fuzzy argumentation problems, a calculation of truth in fuzzy reasoning is presented.
依据实验值得到了管内火焰传播速度的经验公式。
Empirical formula about flame propagation speed in tube is obtained.
推导了冲激荷载作用下薄层单元法的基本计算公式，运用这一方法对土中的波动传播进行了模拟，并给出了计算实例。
The formulation of thin-layer element method was derived, the wave propagation process was simulated by the method, and a calculation example was given.
本文基于多相复合介质的波动传播特性，导出介质内纵、横波速的理论计算公式。
According to the properties of wave propagation in multiphase medium, the theoretical formulas for calculating the P-wave and S-wave velocity are deduced.
导出了克尔非线性梯度折射率光纤轴对称模传播常数的解析公式。
The analytic formulas of propagation constants of axisymmetric modes in a Kerr law nonlinear graded index optical fiber are derived.
本文利用微扰法，导出了克尔型非线性对称平板光波导t E模传播常数的近似计算公式。
A perturbation method has been developed to derive the approximate computing formulae of propagation constants for te modes on Kerr-type nonlinear symmetric slab optical waveguides.
本文利用光束变换公式分析了高斯光束通过望远镜系统的传播，讨论了最大扩束比问题。
In this paper, the propagation of Gaussian beams in a telescope system is analysed by using beam transformation formulas. The maximum beam expanding ratio is discussed.
本文从小波理论出发，结合地震波在黏弹性介质中的传播方程，推导出小波尺度域地震波能量衰减公式。
This paper derives an energy attenuation formula of seismic waves in the wavelet-scale domain from the wavelet theory and seismic wave propagation equation in anelastic medium.
然后分别采用这几种方法分析了基片集成波导的传播特性并得出了一些设计公式。
At last the propagation performances of SIW are analyzed using these methods and some designing formulae are deduced at the same time.
通过数据拟合得到了流注稳态传播电场和相对空气密度以及湿度之间的经验公式。
An empirical equation was obtained for explaining the relationship between streamer stability propagation field and relative air density, humidity.
研究UHF频段的无线电波在矩形、圆形和拱形隧道中的传播特性，推导了衰减常数的计算公式。
Propagation characteristic of UHF radio wave in rectangle, circle and arched tunnels is studied in this paper and the computing equation for attenuation constant is deduced.
从近场声全息原理出发，利用声波沿不同方向传播的特点，针对平面、柱面和球面全息测量建立了波数域内的声场分离公式。
According to the NAH theory and propagating characteristics along different directions, sound field separation technique can be established in the wave-number domain.
在全向发射不同接收指向条件下推导出散射面积计算公式，考察了此时椭圆环上的散射面积、散射强度、传播损失与接收角之间的关系。
The relationship of the scattering area, the scattering intensity, the transmit loss and the directivity of the beam with the received angle in the same condition is studied.
利用平面图形几何重心公式计算回采工作面水平投影图形的重心坐标，然后根据影响传播角和开采深度计算下沉盆地中心位置的坐标。
The barycentric coordinates of the plane view projection of a coal face are solved with a formula of geometric gravity centre.
由坐标解析法界址点与面积的误差传播关系、导出了面积精度估算的具体计算公式。
The practical formula for area of house property precision estimation is developed, from the relations of propagation between the analytical boundary points and the area.
通过声波在气液两相流中传播速度试验证明，武德近似公式可以用来计算声波在该两相流中的传播速度。
The testing of transmission speed of sonic wave in the gas-liquid two-phase flow indicates that Wood formula can be used to calculate the transmission speed of sonic wave in the two-phase flow.
对某水电站地下洞室爆破振动进行观测、分析和处理，得到了爆破地震波传播衰减经验公式。
The blasting vibration of an underground chamber is observed, analyzed and interpreted. The experience formula of decay for the blasting earthquake wave is obtained.
对某水电站地下洞室爆破振动进行观测、分析和处理，得到了爆破地震波传播衰减经验公式。
The blasting vibration of an underground chamber is observed, analyzed and interpreted. The experience formula of decay for the blasting earthquake wave is obtained.
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