The electric field , magnetic field , critical frequency , surface current , power transmission and attenuation , as well as te and tm modes in waveguides are discussed 給出計算等效矩形截面波導的te模和tm模、電磁場、臨界頻率、波導壁電流、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 當在貼片表面開不同形式的槽或細縫時,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,在天線等效電路中相當于引入了級聯(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 文中應用空間分解技術( sdt )將二維電大導體目標在空間中分解為若干子區(qū)域,考慮子區(qū)域間的耦合,采用累進迭代方法( pnm )快速計算表面電流和雷達散射截面,然后與漸近波形估計技術( awe )結(jié)合分析了二維電大導體目標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 分析電大導體目標的電磁散射特性,一種基本思想是將大問題化為小問題求解,對目標進行空間分區(qū)或分解矩陣方程等,然后通過迭代快速計算出目標的表面電流和雷達散射截面。
surface: n. 1.表面;地面;水面;廣場,空地。 2.外觀,外表 ...current: adj. 1.通用的,流行的。 2.現(xiàn)在的,現(xiàn)時的,當時 ...compensating surface current: 補償表層流ocean surface current: 表層海流; 表層洋流; 海面洋流; 洋面海流sea surface current: 表層海流surface current classifier: 表流分級器surface current density: 面電流密度surface leakage current: 表面漏泄電流surface wave-current: 表面波流surface-current classifier: 表流式分級機wind-driven ocean-surface current: 風生洋面流current: adj. 1.通用的,流行的。 2.現(xiàn)在的,現(xiàn)時的,當時的。 3.流暢的;草寫的。 the current price 市價。 current news 時事。 current expenditure 經(jīng)常費。 current expenses 日常費用。 the current issue [number] (雜志的)本期。 the current week 本星期。 the current year 今年。 the 10th current [curt.] 本月十日。 current account 往來存款賬;【法律】交互計算。 current English 現(xiàn)代通行英語,日常英語。 current handwriting 草書。 current money 通行貨幣。 current rate 現(xiàn)價,成交價。 current thoughts 現(xiàn)時代思潮。 pass [run, go]current 通用,流行。 n. 1.水流;氣流;電流。 2.思潮,潮流;趨勢,傾向。 3.進行,過程。 a cold current 寒流。 the Japan current 日本海流,黑潮。 the great current of events 天下大勢。 a density 密著(海)流。 an alternating [a direct] current 【電學】交[直]流電。 current of air 氣流。 current of time [the times] 時勢,時代潮流 (go [swim] with [against] the current of the times 順應[違反]時勢)。 current the: 潮流; 柯倫特of current: 電流值of a surface: 面元素of the surface: 表面上, 外表上on surface: 在曲面上on the surface: 從表面上看; 在表面上surface: n. 1.表面;地面;水面;廣場,空地。 2.外觀,外表,皮毛。 3.【幾】面;切口;【航空】翼面。 adj. 表面的;地面的,水面的;外觀的,外表上的;(對高架及地下鐵路說的)平地上的;(對礦井內(nèi)說的)礦井外的。 an adjusting surface 【航空】調(diào)節(jié)板。 a supporting surface 【航空】支持面積。 a plane surface 平面。 surfaces in contact =rubbing surfaces 摩擦面。 look at the surface only 只看外表。 One never gets below the surface with him. 人們無法看透他的內(nèi)心。 a surface raider 海上突擊艦。 look below [beneath] the surface of things 看到事物的內(nèi)部。 of the surface 外觀上的,表面的。 on the surface 表面上,外表上。 vt. 為…裝面[配面],對…作表面處理;使成平面;掘開…的地面;鋪(路面);使(潛艇)浮出水面。 vi. 地面采掘,井外勞動;浮出水面。 surface-to-surface: adj. (導彈)地對地的。 alternating current to direct current: 交流background current or base current: 基流current and non-current liabilities: 當期及非當期負債current capital, current fund: 流動資金current controlled current source: 電流控制電流源