finite difference approximation造句
例句與造句
- A stable finite difference approximation for vibration equation of beams
梁振動(dòng)方程的一個(gè)穩(wěn)定的有限差分近似 - ( 5 ) discuss some mathematical models of the pollutant transport problems in some local river flow fields . by integral transform method , the paper establishes the usual finite difference approximation scheme to solve the numerical solutions and gives examples for the computation of the approximating solutions , moreover , discusses one - dimensional characteristic finite difference method for a convection - diffusion equation under usual conditions
( 5 )針對(duì)水域中污染物輸移問題的數(shù)學(xué)模型，通過積分變換法，得到了簡(jiǎn)化模型在理想化條件下的近似精確解，同時(shí)給出數(shù)值算例，并且對(duì)非理想化條件下模型的特征差分方法進(jìn)行了討論。 - It is proposed on the basis of the analysis on newton method and the preconditioned conjugate gradient method ( pcg method ) . numerical derivatives can be evaluated by symbolic differ - entiation ( sd ) , finite difference approximation and automatic differelltiation ( ad ) . ad has significant advantages over other two approaches
自動(dòng)微分是一種新的能精確而有效地計(jì)算導(dǎo)數(shù)的方法，它優(yōu)越于傳統(tǒng)的微分方法，例如它比符號(hào)微分和差分方法的計(jì)算成本低，又比差分方法計(jì)算精確，自動(dòng)微分在近幾年發(fā)展迅速，應(yīng)用廣泛。 - It's difficult to find finite difference approximation in a sentence. 用finite difference approximation造句挺難的