查询词典 method of difference

On the basis of the previous studies on sound field separation techniques and based on the Euler formula and the finite difference approximation technique, a new theoretical formula of NAH using pressure and particle velocity measurements is given, and then an experiment is performed to validate the method.

随后通过实验检验了该方法在有背景源干扰情况下实现声场分离和重建的有效性。

A study was made on the relationship between the stability and convergence when the difference method was used to solve the initial boundary value problem of the autonomous evolution equation.

研究用差分法求解自治的发展方程初边值问题时稳定性和收敛性之间的联系。

The finite field method is used to calculate difference of dipole moment of theground state and excited state.

然后利用上述结果，用少态模型计算分子的双光子吸收截面。

Taylor series expansion theorem is a very important method for the construction of finite difference.

时域有限差分法是计算电磁领域中的一类非常重要的研究工具。

For dynamic problem, the unsimultaneous staggered iteration FEM method with explicit central difference scheme is used for the elasto-plastic analysis of the dynamic response of a soil foundation. The computed results show good agreement with soil mechanic knowledge.

对于动力问题，采用异步交叉迭代显式有限元解法，对典型的地基算例进行了固液耦合的有限元动力弹塑性反应分析，结果定性符合土力学的一般规律。

Here, the theory and the deducing process of the SEM based on the Legendre polynomial is given. The SEM can get a global diagonal mass matrix, which leads to a very simple explicit time difference scheme and high efficiency. Numerical simulation in the transversely isotropic medium are shown and the results approved that the SEM is a effective method for seismic wave modeling.

文中阐述了基于Legendre多项式的谱元法的理论和推导过程，该方法可以形成全局对角质量矩阵，在时间域使用显式的差分算法，提高运算效率，最后通过横向各向同性介质的数值计算，模拟结果表明该方法是一种有效的数值模拟方法。

An orthogonal experimental design method involving three factors and three factor levels is adopted for the mix design of recycled aggregate concrete, and the effect of each factor level on mix proportion of RAC and the difference between each factor levels are analyzed.

研究不同影响因素对再生骨料混凝土强度的影响是再生骨料混凝土研究领域的主要方面之一，对实际工程应用有着重要的意义。

Temperature field evolution of metallic glass in quartz tube is simulated by using finite difference method.

numerical simulation ；利用有限差分方法模拟了一个石英管内非晶合金冷却形成过程温度演变过程，并观察了冷却过程中的不同部位在不同时刻的冷却速度的变化。

On the aspect of error compensation, the system using the geometric average sound pressure instead of the arithmetic average sound pressure to get the sound pressure of the measurement point. This method not only reduces the high frequency error in the sound intensity measurement, which compensates the finite difference approximation error, but also greatly reduces the computation of the sound pressure spectrum.

误差补偿方面，课题采用几何平均声压代替通常的算术平均声压来计算双传声器法的声场声压值，这样不仅可以有效的减少声强测量中的高频误差，对有限差分误差起到了补偿作用，而且还大大减小了声压谱计算中的计算量。

Use of the finite difference method for Volterra equation here as a variable element of the equation, As the same...

用差分方法求解沃尔泰拉方程，此处为一个变元的方程，由于该方程同时含有微分和积分，一般求解有一定的困难。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。