band x 中文意思是什麼

band x 解釋
波段
  • band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
  • x : X2＝ （羅馬數字）10 XX ＝ 20 IX ＝ 9 XV ＝ 15 XL ＝ 40 LX ＝ 60 XC ＝ 90 DXL ＝ 540 MX ＝ 1010 ＝...
  1. By observing the energy band of hard x - ray, people not only can expand a series of studies to celestial bodies or phenomena of nova and supernova ' s breaking out, nucleus ' s compose, but also many interactional process of thermal braking radiation, synchronal radiation

    硬x射能區的天文觀測一方面可以研究一系列的天體目標或超新星和新星的爆發、核合成等現象，另一方面也可以研究一系列的相互作用的過程：熱韌致輻射、同步輻射等。
  2. X - band radar signal frequency synthesizer based on dds - driven pll

    波段雷達信號頻率綜合器
  3. Research on x - band inner coaxial disk - loaded relativistic backward - wave oscillator

    波段內同軸膜片加載相對論返波振蕩器的特性研究
  4. The photocatalytic activities of the xw11 / tio2 ( x = p, si, ge ) composite films were tested via degradation of aqueous azo - dyes, congo red ( cr ) and naphthol blue black ( nbb ). it was observed that the photocatalytic activities of the three composite films are much higher than that of the pure tio2 film, mainly attributed to the synergetic effect between xw11 and tio2, i. e., xw11 - catalyzed electron transfer from the conduction band ( cb ) of photoexicited tio2 to itself

    結果表明三種復合膜均具有遠高於純tio _ 2膜的活性，主要歸因於復合膜材料中多金屬氧酸鹽和tio _ 2之間存在的協同效應，即作為強電子受體的多金屬氧酸鹽接受tio _ 2受光激發形成的導帶光生電子，延長了空穴-電子的再復合時間，同時自身仍具有光活性。
  5. Abstract : according to the continuative condition of the tangential fields on the slot aperture which is the inclined narrow - slot on the broadwall of a sectoral waveguide, the moment method is used to calculate the magnetic current coefficient and distribution. then the scattering field, the scattering parameter and the equivalent impedance are obtained. leting only the te11 dominant mode propagates in the waveguide, the scattering parameters and the normalized equivalent series impedance in the x - band are computed. the basis disigned the slot antenna and the slot array is offered

    文摘:根據縫隙口面切向場的連續條件，採用解析數值法矩量法，對扇面波導寬壁上窄的斜縫進行了計算，解得了磁流系數及其分佈，並得到散射場、等效散射參量及等效阻抗等重要參數.假定波導中僅有te11主模傳輸，在x波段計算了散射參量和歸一化等效串聯阻抗，給出計算結果，為縫隙天線和縫隙陣列設計提供了依據
  6. Then enzyme was purified with a deae - cellulose ( 5. 5x50cm ) column, a toyopearl hw - 65 ( 5. 5 x 50cm ) column and a sephadex g - 200 ( 5. 5 x 80cm ) column. finally, the enzyme was purified for 10 folds with the recovery of 17. 4 %. page showed a single band for the purified creatinase

    3 、肌酸水解酶的提純酶在硫酸銨飽和度為40 80之間完全沉澱，先後經過deae - cellulose離子層析柱、 toyopearlhw - 65疏水層析柱、 sephadexg - 200分子篩層析柱層析，最終使酶提純10倍，最終得率為17 . 4 。
  7. Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide. comparing to sectoral waveguide, the new waveguide has the same voltage characteristics and is easier to be produced and fixed. an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given. a resonant slot linear array in c & x band is designed, in which the slot voltage distribution is equiphase and the input is matched. the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured. the experimental results show the conformance with theoretical results

    文摘:把常用的矩形波導一個寬面改成圓弧形構成的波導稱為圓突-矩形波導.這種波導與扇面波導相比：電性能相當；波導管結構更加簡單，容易加工，便於安裝.文中給出圓突-矩形波導中主模場，圓曲面上縱向槽歸一化諧振電導近似公式.設計了c和x波段波導曲面縱向諧振縫隙線陣，縫隙電壓相位為同相分佈，輸入端匹配.實際測量了天線輸入端電壓駐波比和h面方向圖，理論與實驗相吻合
  8. The energy band of hard x - ray, with strong penetrability, is an important astrophysical wave band

    硬x射線能段是天體物理的重要波段，由於具有較強的穿透能力，因而它可以攜帶輻射區的很多信息。
  9. Chapter 2 introduces the principle theory of lna, harmonic mixer, multiplier, spdt, vco and the basic design flows of the ads examples ( x - band ), the power combine technology, the millimeter - wave power amplifier mmics ’ trends nowadays

    第三章介紹了毫米波前端中無源電路的設計，包括毫米波窄帶濾波器的設計、微波和中頻濾波器的設計、波導到微帶的過渡、微波信號的層間過渡。
  10. When x is above 1. 3 %, the emission spectra are strongly broadened and do not show any well - defined features, and their peak positions shift to lower energies correspondingly with increasing x. the large band - gap bowing of gap1 - xnx alloy is induced by the impurity band formation due to the intercenter interaction

    對中心發光的nn3束縛激子的零聲子線及其聲子伴線，並得到了nn3的所有聲子伴線（ l0 、 la 、 ta ）的s因子在約20k卜50k范圍內與溫度的關系。
  11. Egan designed the inxs x album cover, as well as directing videos for the band

    艾甘曾為「伊克斯樂隊」設計過《 x 》專輯的封面，還曾為這支樂隊執導過音樂錄影帶。
  12. In the passive circuit part, according to the theories of microstrip line and coupled microstripwe, the characteristic of microstrip and coupled microstrip was analyzed, the x band filter and dc block circuit of amplifier have been designed by hp - ads software

    為毫米波設備提供本振源。在無源電路部分，我們首先對微帶線、耦合線等基本理論作了簡單的介紹。
  13. In the active circuit part, based on the theories of multiplier of srd and fet, we have designed the circuit of x band 6 multiplier and ka band tripler. then they are simulated and optimized using harmonic balance method. furthermore, the results of optimization and experiments are analyzed

    在有源電路部分，我們介紹了階躍管、 fet倍頻器的基本原理，在此基礎上分別設計了兩個倍頻器電路，然後利用諧波平衡法進行了模擬，並對模擬、測試結果作出了比較。
  14. Detail specification for mixer diodes for use at x - band frequencies

    X波段用混頻器二極體詳細規范
  15. X - band image - reject mixer design

    波段鏡像抑制混頻器設計
  16. The x - band limiting amplifier is a part of the front - end for x band receiver. in this thesis, a x - band limiting amplifier is designed

    微波限幅放大器是電子偵察、電子對抗等雷達接收系統中的重要部件，存在著廣泛的應用。
  17. In euv and soft x - ray band, the most often used detector is ion chamber with rare gas, from whose collective electrode we can directly calculate intensity of photon flux

    在極紫外和軟x射線波段常用的探測器是稀有氣體電離室，可以通過電離室收集極的收集電流直接計算出光子流強度。
  18. A x - band five - cavity tro is designed. with the voltage 760kv, the current 6ka and the magnetic field 2. 6t in the simulation, it ' s output power is about 1. 2gw

    小信號理論分析得出只有3 / 6模與電子束與電子束有負能量交換，其它四個模式電子束有正能量交換。
  19. Band aid 20 became the 997th no 1 with do they know it ' s christmas and it has led the singles chart for four weeks. the x factor winner steve brookstein has been tipped as the 998th with his single against all odds, which has sold 40, 000 copies so far, taking the no 2 position and with band aid sales expected to slow now christmas is past

    美國節目x factor的獲勝者史蒂夫布魯克斯坦被推為第998位排行榜冠軍，其成名單曲不計成敗現已賣出四萬張，在排行榜上暫居第二，而聖誕節已經過去，預計band aid組合的銷售勢頭將減緩。
  20. A x - band six - cavity tro is studied. with the voltage 760kv 6ka and the magnetic field 2. 6t in the simulation, output power is about 1. 5gw is obtained, and interaction efficiency is 31 %. a noveland high accurate numerical synthetic technique is presented for determining the high frequency characteristics of six - cavity with open boundary

    對粒子模擬的輸出微波功率的作出診斷，找到讀取微波功率快速有效的方法：在電場和磁場同相的前提條件下，對時域波形進行傅立葉變換，微波功率頻域的二倍頻所對應的幅度即為微波x波段渡越輻射振蕩器的理論和實驗研究平均功率的大小。
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