approximate vt. 1.使接近。 2.接近;走近。 3.近似,約計(jì)。 4.模擬。 5.估計(jì)。 approximate a solution to a problem 使問題近于解決。 approximate something to perfection 使某物臻于完善。 The total income this year approximates 10,000 dollors. 今年總收入接近一萬元。 approximate the motions of the stars in a planetarium 在天文館中模擬行星的運(yùn)行情況。 We approximated the distance at 100 miles. 我們估計(jì)行程距離為100英里。 vi. 近于。 His income this year approximates to 8,000 dollars. 他今年的收入接近八千美元。 adj. 近似的,大概的。 an approximate account 簡要的說明。 an approximate date 大約的日期。 the approximate estimate 大概的估計(jì)。 an approximate number 概數(shù)。 an approximate value 近似值。 adv. -ly 大體,大致。
Aiming at efficient analyses of electromagnetic characteristics of electrically large complex cavities, some hybrid techniques are developed based on eb-fem, including ipo / fem, extended ipo, improved ipo / fem, ddm / fem-bie, ddm / fem-po-ptd, fem / ibc, and fem / pml . the following contributions have been made in this dissertation : a novel hybrid approach is proposed in which iterative physical optics ( ipo ) subdomain-splicing technique is combined with eb-fem, the mathematical model of the proposed ipo / fem is established by some approximate methods 本文以eb-fem為基礎(chǔ),以電大尺寸復(fù)雜腔體的電磁特性為分析對(duì)象,對(duì)eb-fem與迭代物理光學(xué)法(ipo)、區(qū)域分解法(ddm)、阻抗邊界條件(ibc)、完全匹配層(pml)和mur吸收邊界條件的結(jié)合算法以及具有非完純導(dǎo)體邊界的ipo理論模型進(jìn)行了研究。
Consult the tolerance method of fix income security's market risk, we consequence and conclude the s-y approximate method of tolerance option's market risk base on the key theory of var parameter model, and it offer a theoretical foundation of option's market risk real time tolerance 參考固定收益證券的市場(chǎng)風(fēng)險(xiǎn)度量方法,在var(風(fēng)險(xiǎn)價(jià)值)參數(shù)模型的核心理論基礎(chǔ)之上,推導(dǎo)并歸納總結(jié)出度量期權(quán)市場(chǎng)風(fēng)險(xiǎn)的-近似法,為期權(quán)市場(chǎng)風(fēng)險(xiǎn)的實(shí)時(shí)監(jiān)控提供了理論依據(jù)。
Topics covered include : static equilibrium, force resultants, support conditions, analysis of determinate planar structures ( beams, trusses, frames ), stresses and strains in structural elements, states of stress ( shear, bending, torsion ), statically indeterminate systems, displacements and deformations, introduction to matrix methods, elastic stability, and approximate methods 主題包含了:靜力平衡、合力、支承條件、靜定平面結(jié)構(gòu)(梁、桁架、構(gòu)架)分析,結(jié)構(gòu)構(gòu)件之應(yīng)力與應(yīng)變,應(yīng)力狀態(tài)(剪力、彎矩、扭力),靜不定系統(tǒng),變位與變形,矩陣方法介紹,彈性穩(wěn)定及近似值解法。