quarter wave 中文意思是什麼

quarter wave 解釋
四分之一波長
  • quarter : n 1 四分之一。 ★3/4通常不說 three fourths 而說 three quarters 2 一刻鐘，十五分鐘；一季〈四季結賬...
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  1. The quarter-wave plates are attached by bayonet type couplings to the supporting rings of their respective polarizers.

    四分之一波片藉助于槍刺式聯結器與各自的偏振鏡的座環相聯結。
  2. A quarter-wave plate for, say, green light is not a quarter-wave plate for any other color.

    舉例來說，綠光的四分之一波片，對其它顏色的光來說就不再是四分之一波片。
  3. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  4. The orientation of the principal stresses relative to the directions of the polarizer and first quarter-wave plate is of course immaterial.

    主應力相對于起偏鏡和第一個四分之波片方向的方位，當然是無關緊要的。
  5. A two - dimensional plain strain finite element model of infinite plate is developed to investigate the ultrasonic wave propagation and scattering on three kinds of cracks : parallel to the surface, 450 oblique angle to the surface, and quarter - circle

    摘要建立了無限長板的具有吸收邊界的二維平面應變有限元模型，在研究了脈沖超聲波在無限長板中傳播的基礎上，對板中平行於表面的裂紋、與表面成45的斜裂紋和四分之一圓周弧形裂紋三種情況的脈沖超聲波散射進行了重點研究。
  6. The modulation circuit utilized the vector modulation technology based on fourth - harmonic mixer. the lo frequency is only quarter of carrier frequency. direct high speed qpsk digital modulation of millimeter wave signal can be realized with fairly simplified lo circuit

    調制電路採用了以四次諧波混頻器技術為核心的矢量調制技術，利用1 / 4載波頻率作為本振信號，實現了對毫米波信號直接進行高速qpsk數字調制。
  7. The directions can be obtained by removing the quarter-wave plate and following the procedure for plane polarized light or by interpolation.

    可將四分之一波片卸去，並按平面偏振光法或內插法來決定其主應力方向。
  8. Biology, etc. owing to many merits has not yet been used to measure parameters of gratings. the paper researches on the subject in view of current lack of it. the main tasks of the paper include : analyzing ellipsometric characteristics of gratings in detail with vector diffraction theory and ellipsometrics ; devising a reflective quarter wave plate at normal incidence according to some ellipsometric characteristics ; making use of normal simplex algorithm during ellipsometric inversion of gratings parameters, inversing ellipsometric parameters with gaussian noise of different standard deviations to simulate actually measured values with examples of isotropic metallic and anisotropic step gratings and testing that ellipsometry about gratings parameters is feasible with the range of certain precision ; discussing choice of incidence angle at length

    本論文的主要工作包括：結合光柵的矢量衍射理論和薄膜的橢偏理論，詳細分析了光柵的橢偏特性；並且根據一些橢偏特性設計出一款正入射反射型單波長1 4波片；在光柵參數的橢偏反演中，引入正單純形法作為反演演算法，分別以各向同性的正弦形金屬光柵和各向異性的階梯型光柵為例，在標準橢偏值的基礎上加入不同偏差的高斯噪聲來模擬實際的橢偏測量值進行反演，在一定精度范圍內得出滿意的光柵參數，說明光柵參數的橢偏測量是可行的；還就入射角的選取問題進行了一定的探討。
  9. Quarter wave plate

    四分之一波片
  10. By a quarter of wave length commutator principle, combining with electromagnetic wave absorb of filling material

    利用四分之一波長轉換器原理，結合填充材製成電磁波吸收體。
  11. Investors who had tempered their expectations for first - quarter earnings on monday were energized by the initial wave of upbeat results

    星期一，已降低了一季度收益期望值的投資者被這一樂觀結果注入活力。
  12. The common are quarter - wave plate and half - wave plate. fitted with other polarimetric elements, they can realize converting and rotating of polarization states, and modifying of all kinds of light wave

    光相位延遲器同其他偏光器件相配合，可以實現光的各種偏振態之間的相互轉換、偏振面的旋轉以及各類光波的調制。
  13. Quarter wave line

    四分之一波線
  14. Quarter - wave antenna

    四分之一波天線
  15. The quarter wave vertical antenna is usually the simplest to construct and erect although i know a great many people who would dispute that statement

    四分之一波浪垂直的天線四分之一波浪垂直的天線通常最簡單修建和架設雖然我知道偉大會爭執那個聲明的許多人。
  16. Through measuring the thickness of mica plates and the wavelengths at which they act as quarter wave phase retarders, the birefringence can be obtained in terms of the function relation between the phase delay, the wavelength and the thickness

    通過測量雲母材料的厚度和相應厚度情況下作為/ 4波片使用所對應的波長，利用相位延遲與波長及厚度函數關系式直接求得雲母的雙折射率。
  17. Quarter - wave aerial

    四分之一波長天線
  18. Stop quarter - wave filter

    阻塞四分之一波長濾波器
  19. The first wave came in october 1930, the second in march 1931, and the third in the last quarter of 1932

    銀行倒閉風波始於1930年十月， 1931年三月又有第二次，第三次在1932年後期。
分享友人
分享到 Line

分享到臉書