旋轉波帶 的英文怎麼說
中文拼音 [xuánzhuǎnbōdài]
旋轉波帶
英文
rotational band-
Firstly, this paper designs a polar coordinate barotropic vorticity equation semi - spectral model and a quasi - geostrophic grid model in order to research the propagation of vortex rossby waves and tropical cyclone intensity change entirely
本文首先設計了一個極坐標系正壓渦度方程的半譜模式、一個準地轉格點模式對渦旋rossby波傳播和熱帶氣旋強度變化進行了較為系統的研究。The addition formula of spherical harmonics function of degree n and order 1 is derived using the relations between coordinate varieties after coordinate rotating and the property of the associated legendre polynomial. the relations among the magnetic vector potential, the modified magnetic vector potential and the second - order vector potential ( sovp ) are shown going forward one by one. it is explained that the solutions of electromagnetic fields in different coordinate systems can be transformed and an example having analytical solution is given
利用坐標旋轉后球坐標變量間的關系和連帶勒讓德多項式的性質推導得到了n次1階球諧函數的加法公式；以遞進的方式說明磁矢量位、修正磁矢量位與二階矢量位的關系，寫出了引入二階矢量位的過程；以時諧場矢量邊值問題為例，闡明了不同坐標系下電磁場解的相互轉化原理，給出了一個解析解的轉化例子；在球坐標下，引入了較球矢量波函數更普遍的兩類矢量函數，給出了其在球面上的正交關系。Insert nut is designed for rapid installing into thermo - plastics by means of ultrasound. its two opposite helical knurl bands provide a combination of high torque and pulling out resistance
壓入式螺母通過加熱或利用超音波可快速安裝到熱塑性塑料中，它的兩道相反旋向的壓花帶可提供較高的抗扭轉和抗拉拔能力Acoustic intensity detection can efficiently estimate objective direction, and frequence partition, beam revolving and vector equations can differentiate multi - object
聲強檢測可以有效地進行目標方位估計，利用頻帶劃分、旋轉波束、矢量方程組可以在一定程度上有效地解決多目標干擾的問題。The phenomena of initial disturbance vorticity translating into spiral bands is most evidently for it locating at the periphery of radius of maximum wind ( rmw ), near rmw next and the spiral bands vanish when it is positioned in the inner core region. indicating that the farther the distance from the tc center, the more distinctly the spiral bands and the opposite is true
初始圓形擾動渦度場轉化為螺旋臂渦量帶的現象是初始擾動位於渦旋最大風速半徑（ rmw ）外圍最顯著，其次是rmw附近，當擾動位於渦旋內核區時幾乎沒有螺旋臂結構形態出現，表明，初始擾動離tc中心越遠，其強迫渦旋rossby波形成的螺旋帶結構越明顯，反之越弱。When the analyzer was located in four angles, a photoelectric detector was used to gather the energy of laser, so we can calculate the retardation of wave plate with the phase shifting
測量裝置採用了步進電機帶動檢偏器旋轉，運用光柵編碼器測角裝置測量檢偏器的轉動角度，使用光電探測器採集檢偏器在四個方位角度的光強值，根據移相演算法得出波片的相位延遲角。The former one is a product of the pressure pulsation resulting from the fan blade periodically cutting the air, with the blade passing frequency as its base frequency and accompanied by higher harmonics. the wide - band turbulent noise is formed when the rotating fan forces the surrounding air to produce turbulent throw - outs and results in gas thickening and thinning processes
旋轉噪聲是由於風扇的葉片周期性地切割空氣，引起空氣的壓力脈動產生的，以葉片通過頻率為基頻，並伴有高次諧波。湍流噪聲是由於風扇運動導致的周圍空氣發生湍流脫體，使空氣發生擾動，形成氣體的壓縮與稀疏過程而形成的，是一個寬頻帶噪聲。But when concerned with higher magneto - optical recording density, the kerr angle become smaller at shorter wavelength than at longer wavelength result from recoding and reading the memory information by shorter wavelength semiconductor laser tube. further more the signal - to - noise of recording information lowers and brings difficulty for the reading
但在更高密度磁光記錄方面，由於信息記錄與讀出採用短波長半導體激光管，磁光記錄材料的克爾旋轉角比長波長時小，導致記錄信息的信噪比下降，給信息讀出帶來困難，為此將對材料進行改性。The aerodynamics characteristic of spinning projectile with lateral jets has constitutionally difference in formation from that without jet, and it waves periodically. these characteristics are very important for the study of aerodynamics of projectile with lateral jets
與光彈體相比，旋轉側噴彈丸的空氣動力特性不僅在形成機理上發生了本質變化，而且在數值上表現出復雜的波動形式，這些特點將對旋轉側噴彈丸空氣動力研究帶來直接和深遠的影響。The smaller convective patch corresponds to slight changes of maximum mean wind speed and the larger convective patch corresponds to the waves amplifying, the intensity of the inward propagation of vorticity strengthening distinctly, the amplitude of velocity change increasing and the period longing
初始擾動尺度減小，渦旋rossby波減弱，對tc強度增強作用減弱；擾動尺度增大，波動增強，向內傳播的渦量顯著增大，但轉化為渦量帶現象變化不大，風速變化的震蕩性增強。分享友人