equation n. 1.平衡,均衡;平均,相等。 2.【數學】方程式,等式。 3.【天文學】(時)差;均分,等分。 4.【化學】反應式。 algebraic [linear, simple, quadratic, cubic, simultaneous] equation 代數(一次,一元一次,二次,三次,聯立)方程式。 differential equation 微分方程。 an identical equation 恒等式。 equation of light 【天文學】光行時差。 equation of payments 平均分期付款。 equation of state 【物理學】物態方程式。 equation of time 【天文學】時差。 personal equation 【天文學】觀測上的個人誤差。
The situation can be handled conveniently by equations as follows . 這種情況可以用下面的公式很方便地表達。
Some of the most important functional relationships in economics are determined by equations . 經濟學中某些重要的函數關系都是由方程來確定的。
The criterion for gravitational contraction set by equations (3. 4) is significantly weaker for more massive clouds . 由(34)式建立的引力收縮判據,對質量較大的云是很牽強的。
Proving problems in plane geometry by equations of the system of straight lines 利用直線系方程證明平面幾何問題
The criterion for gravitational contraction set by equations ( 3 . 4 ) is significantly weaker for more massive clouds 由( 3 4 )式建立的引力收縮判據,對質量較大的云是很牽強的。
4 . on soil profile , the distribution of kc1 applied at soil surface could be described by equations of c = a + blnz , where c was the concentration of the diffusing ion ( mg / kg ) of soil , z the soil depth , a and b simulated parameters 可用半對數方程二a blnz )擬合兩種離于在上壤剖面中擴散的動態過程,式中c為養分離于含量沁叭g )為土層深度仁) , c 、 b為擬合參數。
The discussing process follows the steps below : first , suppose the system ( 1 ) has only one finite singular point ( 0 , 0 ) . then we can assume b50 = 0 , which special direction is determined by equation g ( 0 ) - 0 , introduce poincare transformation to discuss infinite singular points , according to the coefficient conditions , list all possible infinite singular points and special directions , judging their type , drawing out all kinds of phase portraits 本文主要內容為:一、假設系統( 1 )只有唯一的有限遠奇點( 0 , 0 ) ,則不妨設b _ ( 50 ) = 0 ,其特殊方向由示性方程g ( ) = 0給出,引進poincare變換研究無窮遠奇點,再根據各定理中的系數條件,列出系統所有可能的無窮遠奇點和特殊方向,并判斷其類型,由此畫出系統的各種可能的全局相圖。
First , proper initial conditions between ekv and target are the premise of hit - to - kill . capture region is described by equations of relative motion defined in modified polar coordinate while phasetrajectory graph is introduced . and the disturbance of initial condition biase is analyzed by cadet through statistical linearization of ekv dynamical model 本文在修正極點坐標系中建立攔截器和目標之間的相對運動方程,結合相平面軌跡圖,分析了大氣層外動能攔截器的攔截區;對大氣層外動能攔截器動力學模型進行統計線性化,采用協方差分析描述函數法,分析了初始狀態誤差對彈道的影響。
In this technique , the two - terminal date sampling unsynchronized angle is considered as a unknown quantity , and the fault location equation x = f ( ) is established . superimposed components of two terminal electrical quantities are used in the algorithm . the unsynchronized angle is solved iteratively by equation im ( x ) = 0 , and the accurate solution of x is found finally 本方法將兩端數據采樣的不同步因素以不同步角的形式引入,建立x = f ( )的測距方程,在算法中采用兩端電氣量的故障分量,并利用im ( x ) = 0這一條件用搜索法求解不同步角,進而求得故障距離x 。
Nature of the singular point of plane poincare mapping that is established by equation ( 1 ) is analyzed . relationship between the three parameters and homoclinic orbit and heteroclinic orbit of the hamilton system corresponding to this sort of equation is discussed . the adequate and essential condition of the existing homoclinic orbit or heteroclinic orbit for the hamilton system is presented 分析了方程( 1 )建立的平面poincare映射的奇點性質,討論了此類方程對應的hamilton系統的同宿軌道和異宿軌道與三個參數o 、夕、尸的關系,給出了hamilton系統存在同宿軌道或異宿軌道的充分必要條件。