difference n. 1.差異,差別。 2.不和,爭論。 3.【數(shù)學(xué)】差,差額。 4.【邏輯學(xué)】特殊性。 There is no difference between them. 兩者毫無差別。 the difference of jetsam from flotsam 棄貨不同于浮貨。 What difference can it make 不是一樣嗎? He is an artist with a difference. 他是別具風(fēng)格的藝術(shù)家。 distinction without difference 無聊的區(qū)別。 make a difference 發(fā)生差別;使…有差別;(結(jié)果等)是重要的,有關(guān)系[影響] (One false step will make a great difference. 失之毫厘,謬以千里。 Don't let it make any difference. 沒關(guān)系。 make a difference between A and B 使甲乙有別,對甲乙不一樣)。 pay [meet] the difference 付差額金。 seek common ground while reserving differences 求同存異。 settle differences 調(diào)停。 split the difference 1. 折中,妥協(xié)。 2. 均分剩下的東西。 vt. 〔罕用語〕區(qū)別,使有差別。
partial adj. 1.一部分的,局部的,不完全的。 2.不公平的;偏袒的。 3.偏愛的,特別歡喜的 (to)。 4.【植物;植物學(xué)】后生的,再生的。 partial drought 小旱。 partial in one's judgement 判斷不公平的。 be partial to 偏愛 (He is too partial to tobacco. 他太歡喜抽煙了)。 adv. -ly n. -ness =partiality.
Positive solution of neutral partial difference equations 中立型偏差分方程的正解
Oscillation criteria of partial difference equationswith continuous variables 具有連續(xù)變量的偏差分方程的振動(dòng)準(zhǔn)則
Differential method for linear partial difference equation with constant coefficients 常系數(shù)線性偏差分方程的微分解法
Oscillation of nonlinear partial difference equations with continuous variables 具有連續(xù)變量的非線性偏差分方程的振動(dòng)性
Using our results , the boundedness of some partial differential equations and some partial difference equations are studied 利用所得結(jié)果研究了某些偏微分方程及偏差分方程解的有界性。
By means of the comparison theorem , and the oscillation of some non - linear partial difference equations is discussed and some concise conditions and authenticity are given 給出系統(tǒng)振動(dòng)的比較定量,利用比較定理討論了一類非線性偏差分方程的振動(dòng)性,給出簡單的判別條件及證明。
Some oscillation criteria for a class of nonlinear partial difference equations with variable coefficients are obtained . some linearized oscillation theorems for these equations are established 摘要獲得了具有變系數(shù)的時(shí)滯偏差分方程的振動(dòng)性準(zhǔn)則,建立了幾個(gè)線性化振動(dòng)性定理。
In this paper , an asymptotic method have been studied to solve the nonlinear partial difference . the content of nonlinear theory has been enriched . some methods , which are used to solve strongly nonlinear equation , have been expanded 本文主要是對求非線性偏微分方程的漸近解進(jìn)行研究,進(jìn)一步豐富了非線性理論的內(nèi)容,拓寬了求解強(qiáng)非線性問題的一些方法的應(yīng)用范圍。
Based on a duralumin flexible beam with piezoelectric films attached , distributed parameter modal described by partial difference equations is builded , and then turned into a set of two order systems with the method of modal analyse . state feedback control and independent modal control is investigated . and simulation of the closed - loop system with thest two methods is performed in matlab 并用模態(tài)分析的方法,將系統(tǒng)的偏微分方程模型轉(zhuǎn)化成了模態(tài)模型;研究了狀態(tài)反饋和獨(dú)立模態(tài)方法;進(jìn)一步完善了軟件界面以及軟件功能;在實(shí)際系統(tǒng)中,應(yīng)用狀態(tài)反饋算法,有效抑制了懸臂梁在受到外界瞬時(shí)脈沖擾動(dòng)和激振引起的一階、二階模態(tài)振動(dòng)。
Hence this method can improve accuracy and efficiency of the calculation . c . based on these work upwards , an adaptively wavelet precise time - invariant integration method was proposed in this paper . in this method , an adaptive multilevel interpolation wavelet collocation method for partial difference equations ( pdes ) was conducted , in which the time complexity is less than oleg v ' s method , and then the adaptive precise integration method was combined with , so that in this method the adaptively discretes both in time domain and physical domain were realized 該方法將外推法引入求解結(jié)構(gòu)動(dòng)力方程的精細(xì)時(shí)程積分法中,從而使該方法在求解非線性動(dòng)力方程中可以自適應(yīng)選取時(shí)間步長;需要指出的是,由于考慮了矩陣指數(shù)精細(xì)算法和外推法算法在時(shí)間離散方法上的一致性,在外推過程中,計(jì)算工作量基本沒有增加;因此,兩種方法的結(jié)合有效提高了算法的效率和精度。