basic adj. 1.基礎(chǔ)的,基本的,根本的。 2.【化學(xué)】堿性的,堿式的。 3.【礦物】基性的,含少量硅酸的。 4.【軍事】初步的;最下級的。 basic data 基本數(shù)據(jù)。 basic industry 基礎(chǔ)工業(yè)。 n. 〔常 pl. 〕 1.基礎(chǔ),基本。 2.基礎(chǔ)訓(xùn)練。 work for the basics 為衣食住等操勞。 adv. -ally 基本地 Basic = Basic English.
variable adj. 1.易變的,變化無常的,無定的 (opp. constant, steady)。 2.可變的,能變的;變換的。 3.【數(shù)學(xué)】變量的;【天文學(xué)】變光的;【生物學(xué)】變異的。 Prices are variable according to the exchanges. 物價跟著匯率變動。 a man of variable character 反復(fù)無常的人。 a rod of variable length (伸縮)如意棒。 a word of variable construction 可以作種種解釋的詞。 variable capital 可變資本。 a variable budget 臨時預(yù)算。 n. 1.易變的東西。 2.【數(shù)學(xué)】變量,變數(shù),變項,變元 (opp. constant);【天文學(xué)】變星 (=variable star);【航?!?方向不定的)變風(fēng),不定風(fēng) (opp. trade wind); 〔pl.〕 (貿(mào)易風(fēng)帶中的)變風(fēng)帶。 adv. -ably ,-ness n.
Based on sand - storm ' s occurrence times data in ningxia , arctic sea - ice area index data , height and wind fields data of ncar / ncar reanalysis , the basic variable rules and anomalous air circulation background fields of spring sand - storm ' s occurrence times in ningxia are systematically analyzed . more attention was paid on studying the tele - connections between arctic sea - ice areas and spring sand - storm ' s occurrence times in ningxia , and impossible affecting process of greenland sea - ice areas " anomalies on sand - storm ' s occurrence times . the results are as follows : 1 本文根據(jù)寧夏沙塵暴發(fā)生次數(shù)資料、北極海冰密集度資料和ncar / ncep再分析資料,較系統(tǒng)地分析了寧夏春季沙塵暴發(fā)生次數(shù)的基本變化規(guī)律及其異常的大氣環(huán)流背景場,重點研究了北極海冰與寧夏春季沙塵暴發(fā)生次數(shù)之間的遙相關(guān)關(guān)系以及格陵蘭海冰異常變化對沙塵暴的可能影響途徑,結(jié)果表明: 1 、夏春季沙塵暴發(fā)生次數(shù)在1960 - 2000年有明顯的年代際和年際變化特點,總體呈減少趨勢,且在1984年發(fā)生了明顯的突變,有10年和7年左右的周期。
Based on the theories of hybrid / mixed finite element method , the generalized energy functional including stress , mechanical displacement , electric displacement , electric field and electric potential is used , with the electric - potential relations and the constitutive equations of piezoelectric materials constrained , hybrid energy functional including mechanical displacement , electric potential and stress is gained . moreover , splitting in - plane components and transverse components , the mixed energy functional in which mechanical displacement , transverse stresses and electric potential as basic variables is derived . with the use of surface stress parameters of sub - elements , the continuity of transverse stress at interfaces between layers is obtained 在回顧雜交混合有限元理論的基礎(chǔ)上,從包括位移、應(yīng)力、應(yīng)變、電勢、電位移、電場強(qiáng)度六個未知量的廣義壓電材料能量泛函出發(fā),通過約束電場強(qiáng)度?電勢關(guān)系、應(yīng)力與應(yīng)變及電場強(qiáng)度的關(guān)系,得到僅包括位移、電勢、應(yīng)力三個未知量的雜交變分泛函,利用一般層合板的雜交混合變分原理,分離面內(nèi)分量和橫向分量,導(dǎo)出以位移、橫向應(yīng)力、電勢為未知量的壓電層合板的修正變分泛函,作為壓電層合板的雜交元列式的理論基礎(chǔ)。
Regarding the international competitiveness of specialized market and the degree of internationalization of chinese economy as basic variables , we induce four kinds of management pattern of specialized market and think inward internationalization is the basic pattern of the internationalization of specialized market 本文以專業(yè)市場國際競爭力和中國經(jīng)濟(jì)國際化程度作為分析我國專業(yè)市場國際化的基本變量,將專業(yè)市場經(jīng)營歸納為四種模式,認(rèn)為內(nèi)向國際化經(jīng)營是目前我國專業(yè)市場國際化基本模式。
The paper depicts the elasticity with euler form and associates the form with depiction of behavior of fluid . the method takes the velocity as basic variables and then derives the left - deformation tensor from the velocity in order to deal with the time - independent motion . at last in this chapter the equations of the finite flow - element are set up from the principle of the virtual work 首先建立流管元的概念,對彈性固體相關(guān)的部分采用euler描寫,并融入流體行為的描寫中;以速度為變量,反推左變形張量,用于處理流固物質(zhì)的定常運動,給出了控制方程和相應(yīng)的變分式;以此為基礎(chǔ)發(fā)展了一套相應(yīng)的有限流管元算法。
Based on the results of test , monitoring and past analyses of the high rock slope , a generalized model for geology and construction process is established . by combination of computing schemes of orthogonal and even design methods with rock mechanical parameters and initial stress field as basic variable , the finite difference method is used to complete the excavation - simulated computation of the high slope considering the effect of excavation unloading , and an optimized back analysis is conducted by using the neural network and genetic algorithm 在工程試驗、現(xiàn)場監(jiān)測和前期計算分析的基礎(chǔ)上,建立了地質(zhì)與施工的概化模型,以巖土力學(xué)參數(shù)和初始應(yīng)力場為基本變量,按正交設(shè)計和均勻設(shè)計方法進(jìn)行計算方案的組合,采用考慮開挖卸荷效應(yīng)的顯式有限差分法flac ~ ( 2d )程序完成了船閘高邊坡的開挖模擬計算,并通過神經(jīng)網(wǎng)絡(luò)和遺傳算法進(jìn)行邊坡位移反分析。
For the boundary nonlinear problems , such as elastic contact problem , the boundary displacements and boundary tractions are just the basic variables of the boundary integral equation , and the contact conditions can be satisfied with higher accuracy in bem ; therefore , the bem can be applied to solve the elastic contact problem more accurately 對于彈性接觸問題等邊界非線性問題而言,由于邊界位移和邊界面力正是邊界積分方程中的基本未知量,邊界元法能以更高精度滿足接觸條件,因此,邊界元法能更精確地求解彈性接觸問題。