surface current造句
例句與造句
- The electric field , magnetic field , critical frequency , surface current , power transmission and attenuation , as well as te and tm modes in waveguides are discussed
給出計(jì)算等效矩形截面波導(dǎo)的te模和tm模、電磁場(chǎng)、臨界頻率、波導(dǎo)壁電流、功率傳輸和衰減的公式。 - The surface current velocity displays the seasonal variability , too . the velocity varies from 71 . 6cm / s ( maximum ) in december to 55 . 4cm / s ( minimum ) in may in the kuroshio south of japan , and the position 01 extreme appear to the south of kii peninsula
黑潮表層流速最大值同樣存在著季節(jié)性變化特征：日本以南黑潮表層流速最大值由12月份的71 . 6cm / s (最大值)變化到5月份的55 . 4cm / s (最小值) ，極值均出現(xiàn)在紀(jì)伊半島以南海域。 - Loading different shapes of slots in the patches of antennas will cut off the original surface current and the current has to flow around the slots that make its route longer . this course is equally satisfactory in result of inserting cascade inductances in the equivalent circuit of antenna
當(dāng)在貼片表面開不同形式的槽或細(xì)縫時(shí),切斷了原來的表面電流路徑,使電流繞槽邊曲折流過而路徑變長(zhǎng),在天線等效電路中相當(dāng)于引入了級(jí)聯(lián)電感。 - As analyzing the electromagnetic scattering characteristics of two - dimensional electrically large conducting objects , the object is divided into some small regions by using spatial decomposition technique ( sdt ) , but still consider the coupling effect among all the regions , the surface current and rcs of the object can be computed with progressive iterative numerical method ( pnm ) . then the wide - band electromagnetic scattering characteristics of two - dimensional electrically large conducting objects are analyzed with the asymptotic waveform evaluation ( awe ) technique
文中應(yīng)用空間分解技術(shù)( sdt )將二維電大導(dǎo)體目標(biāo)在空間中分解為若干子區(qū)域，考慮子區(qū)域間的耦合，采用累進(jìn)迭代方法( pnm )快速計(jì)算表面電流和雷達(dá)散射截面，然后與漸近波形估計(jì)技術(shù)( awe )結(jié)合分析了二維電大導(dǎo)體目標(biāo)的寬帶電磁散射特性。 - An idea for analyzing the electromagnetic scattering characteristics of electrically large objects is transforming the solution of large problems into that of some little problems . the object can be divided into a number of small regions or the equation be partitioned into some sub - equations , then the surface current and rcs can be computed fast by iterations
分析電大導(dǎo)體目標(biāo)的電磁散射特性，一種基本思想是將大問題化為小問題求解，對(duì)目標(biāo)進(jìn)行空間分區(qū)或分解矩陣方程等，然后通過迭代快速計(jì)算出目標(biāo)的表面電流和雷達(dá)散射截面。 - It's difficult to find surface current in a sentence. 用surface current造句挺難的
- The material ways are to model the honeycomb wall as an impredence surface , to express the infinite honeycomb by using periodic green ' s function , and using method of moment to establish the mathematic model , in applying the methods of moments , we choose the roof function as basic function and choose the razor function as test function ; by equating the incident field to sum of the scattering field and impledance field ; we will set up the integral equation for the surface current , solving it by mom equation . then gain it ' s reflected coefficient ' s numerical result . and we propose first the definition of the equivalent electromagnetic parameters and present a method to calculate them from the gained reflection coefficient
具體方法就是將浸漬吸收劑的蜂窩壁用表面阻抗表示，將無限大的周期結(jié)構(gòu)的電場(chǎng)用周期格林函數(shù)來表示，選取有耗蜂窩結(jié)構(gòu)中具有代表性的基本計(jì)算單元應(yīng)用矩量法建立數(shù)學(xué)模型,在運(yùn)用矩量法時(shí)用屋頂函數(shù)作為基函數(shù)，刀片函數(shù)作為檢驗(yàn)函數(shù)，根據(jù)蜂窩壁表面電場(chǎng)必須滿足入射電場(chǎng)等于散射電場(chǎng)和阻抗電場(chǎng)之和的規(guī)律，推導(dǎo)表面電場(chǎng)積分方程，求解蜂窩結(jié)構(gòu)的表面電流，利用蜂窩的周期規(guī)律得到無限大均勻周期陣列的散射電場(chǎng)。 - The solving steps are as follows : the field is divided into three regions by the cylindrical surface of the finite - length cylinder and the location of the delta - coils . because " the surface current source is placed at the interface , the non - homogenous restricted equation on the magnetic vector potential is transformed into the homogenous helmholtz equation . by using the method of separation of variables to solve equation and according to the interface conditions and the condition at infinity to determine the unknown constants , the expressions for the magnetic vector potential of the three regions are solved out
在求解過程中，假定放置式圓柱線圈是由無窮多個(gè)對(duì)稱圓環(huán)線圈密饒而成，首先求解含有有限長(zhǎng)磁芯的通電對(duì)稱圓環(huán)線圈的電磁場(chǎng)：以有限長(zhǎng)圓柱磁芯的側(cè)面和圓環(huán)線圈所在圓柱面為分界面將場(chǎng)域劃分為三個(gè)小區(qū)域，由于場(chǎng)源放置在內(nèi)邊界面上，使得關(guān)于矢量磁位的非齊次約束方程轉(zhuǎn)化成齊次亥姆霍茲方程，利用分離變量法求解，根據(jù)分界面鄭州大學(xué)碩十研究生畢業(yè)論文摘要條件以及無限遠(yuǎn)條件確定待定常數(shù)，從而得到各場(chǎng)區(qū)矢量磁位的表達(dá)式。 - In the end , the impedance matrix of any three - dimensional conducting object can be portioned into sub - matrices by the projection iterative method ( pim ) , the surface current and rcs can be calculated with convergent iterations , the wide - band electromagnetic scattering characteristics of three - dimensional conducting objects are also analyzed with the asymptotic waveform evaluation technique
最后應(yīng)用投影迭代方法( pim )將三維導(dǎo)體目標(biāo)的阻抗矩陣剖分成小矩陣，通過迭代計(jì)算出表面電流和雷達(dá)散射截面，并與漸近波形估計(jì)技術(shù)結(jié)合分析了三維導(dǎo)體目標(biāo)的寬帶電磁散射特性。