1) inversion of laplace transform
拉氏变换反演
2) Laplace transform
拉氏变换
1.
A method of to get laplace transform with unit step function;
利用单位阶跃函数求拉氏变换
2.
Laplace transformation the uniqueness of primitive function and inverseimage function;
拉氏变换原函数,象函数的唯一性问题
3.
Analytical solution in real space is found by using the Laplace transform and decomposition method for infinite and finite reservoirs.
本文研究了分形油藏无限大地层和有界地层非牛顿幂律流渗流模型 ,利用拉氏变换和分解的方法求得了井底定流量生产无限大地层及有界地层 (包括封闭和定压地层 )五种情况非牛顿幂律流的实空间解析解 ,通过数值积分法和拉氏数值反演分析了分形油藏非牛顿幂律流的压力动态特征以及分形参数和边界对压力动态的影响。
3) Laplace transformation
拉氏变换
1.
Analytic solution of viscoelasticity of thin wall support in a circular tunnel is deducted by using Laplace transformation for calculation of plane strain when the vertical and horizontal stresses in the virgin rock are equal, in which the structure material is regarded as Maxwell body and rockmass as Poyting-Thomson body.
利用拉氏变换方法推导了圆形巷道处在平面应变情况下，在原岩的竖向和侧向应力相等时的薄壁筒支护弹粘性解析解，其中支护材料假设为马克斯韦尔体，岩体为包埃丁－汤姆逊体。
2.
The iteration of the Laplace transformation and the Stehfest numerical inversion method were used for Laplace transformation.
采用Laplace变换和Stehfest数值反演技术对拉氏变换进行多次迭代反演,求得温度分布的近似解。
3.
Using the Line-loaded Integral Equations the corresponding principle and Laplace transformation,the torsion problem of the Linear viscoelastical shaft in which load "Point Ring Couple”can be solved.
应用线载荷积分方法，相应原理和拉氏变换，求得点圆力偶作用于粘弹性回转体的基本解。
4) Laplace transforms
拉氏变换
1.
With Laplace transforms, the transmit functions for velocity and displacement of the pile are derived.
建立了均质土中考虑桩端土和桩侧土作用的任意段变模量桩 ,讨论了在桩顶受纵向激励时的定解问题 ,并用拉氏变换 (Laplace)求得桩顶速度频域响应的解析解 ,然后利用卷积定理和拉氏逆变换求得桩顶速度时域响应的解析解 ,并将其运用到桩基质量的动力检测中 。
2.
The Durbin s numerical inversion of Laplace transforms can be used to figure out the time_domain digital solution of the result of complex frequency_domain convolutions.
导出了适用于计算机进行计算的复频域卷积的离散算法 ,应用Durbin拉氏变换数值反演法对复频域卷积结果进行数值反演 ,可获得时域数值解· 将该数值解与解析解进行比较表明 ,数值解具有较高的精度
3.
The main result is that the definite question for hyperbolic differential equations with semiunbounded mixed boundary can be translated into algebraic equations by using Laplace transforms.
本文通过两次拉氏变换使一维半无界双曲型混合边界定解问题转化为代数方程问题得解。
5) Inversion
[英][ɪn'vɜ:ʃn] [美][ɪn'vɝʃən]
反演变换
1.
Utilizing convergent beam of large aperture realize inversion of circular hole diffraction and circular disk diffraction;
大孔径会聚光束的圆孔和圆屏衍射及其反演变换
6) inverse transformation
反演变换
1.
A Laplace inverse transformation of a random variable sequence of independent same exponential distribution;
独立同指数分布的随机变量序列的一个Laplace反演变换
2.
Twoformation methods are studied: the inverse transformation of conics and the intersection oftwo like-projective pencil of circles.
提出并研究了它的2种构成方法──圆锥曲线的反演变换法和类射影对应圆束相交法；给出了类射影对应圆束的定义和2种构成法的实例及计算机图形。
补充资料：那拉氏
1.指慈禧太后。清咸丰帝妃。同治﹑光绪两朝的实际掌权者。满族，叶赫那拉氏。后因以"那拉氏"指慈禧太后。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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