梯形波 的英文怎麼說

中文拼音 [tīxíngbō]
梯形波 英文
keystone wave
  • 梯 : Ⅰ名詞1 （梯子; 樓梯） ladder; stairs; steps; staircase 2 （姓氏） a surname Ⅱ形容詞（形狀像樓梯的...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  1. Propagation characteristic of electromagnetic wave in trapezium tunnel

    梯形隧道中電磁波的傳播特性
  2. Equivalent analysis method of electricmagnetic wave propagation in mine trapezium - shaped roadway

    梯形巷道中電磁波傳播的等效分析方法
  3. Trapezoid corrugated plate seperater

    梯形波形板分離器頂帽
  4. Because the cross - section of the oversized rib waveguide we fabricated by wet - etching was trapeziform, we analyzed the transmission of oversized rib waveguide by combining effective refractive - index method. the influence of some factors on the optical transmission loss, such as material structure, the height of rib waveguide, and the thickness and refractive index of waveguide layer and up - layer of polymer material, was analyzed

    因為濕法腐蝕工藝製作的反脊波導橫截面是梯形狀的，因此論文中採用了一種簡單有效的方法，即有效折射率法，對梯形反脊波導的光傳輸損耗特性進行了分析，同時考慮金屬電極產生熱場對脊波導傳播特性的影響。
  5. Secondly, the effects of the crest width of the back - emf waveform to the torque ripple in the 120 ? conduction mode are analyzed, among which the effects of the advance commutation angle to the torque ripple are quantificationally analyzed for the bldcm drives whose back - emf waveform crest width is less than 120 ?,

    其次分析了120導通方式下反電動勢平頂寬度對轉矩脈動的影響，對于平頂寬度小於120電角的非理想梯形波反電動勢，定量分析了換相超前角對換相轉矩脈動的影響。
  6. For the bldcm which has a general crest width of the back - emf waveform, two kinds of torque ripple conditions when drived by sine - wave current as well as by square - wave current are deduced based on the mathematical models. in addition, a comparison is carried out between these two conditions, which indicates that sinusoidal current driving is more favorable to minimizing the torque ripple when the crest width of the back - emf waveform is less than a certain value

    闡述了抑制齒槽轉矩措施對反電動勢波形的影響，利用無刷直流電機的數學模型推導並比較了任意平頂寬度梯形波反電動勢在正弦波和矩形波兩種電流驅動下的電磁轉矩脈動情況，得出在梯形波平頂寬度減小到一定數值后採用正弦電流驅動更有利於減小電磁轉矩脈動。
  7. In order to solve this problem, the distribution of the force was studied. with analyzing the data of ship launching, the paper educes seven typical distribution forms, include uniform distribution, sine distribution ( 1 / 2 amplitude ), trapezoid distribution, right triangle distribution, sine distribution ( 1 / 4 amplitude ), parabola distribution, isosceles triangle distribution

    主要有七種分佈形式，包括分佈趨勢較平緩的均勻分佈形式、正弦（ 1 2波形）分佈形式、梯形分佈形式；峰值出現在滑道最前端的直角三角形分佈、正弦（ 1 4波形）分佈、拋物線形分佈；還有峰值出現在分佈區域中間的等腰三角形分佈。
  8. Considering the influence of high evanescent modes, we have obtained the common theory. by the comparing between theoretical calculation and experimental data, we found the theory can accurately describe the high - frequency characteristic of this kind of slow - wave helical groove structure. then, five representative shapes are chosen and researched particularly ( triangle shape, cosine shape, trapezoid shape, rectangular shape and swallow - tailed shape )

    主要工作成果和創新之處在於: 1 .通過考慮高次模式的影響，獲得了一種更為精確分析任意槽形螺旋槽結構的普遍理論，經與實驗測量值比較，發現它更能準確可靠地描述此類螺旋慢波結構的高頻特性，然後詳細研究了五種槽形狀（三角形槽、餘弦形槽、梯形槽、矩形槽和燕尾形槽）對螺旋槽慢波系統導波特性的影響。
  9. We studied the multimode coupling matrix of the key waveguide discontinuity, waveguide step, with the modal fields expansions in waveguides. and obtained the relations with the multimode coupling matrix, the generalized admittance matrices and the generalized scattering matrices. we have compiled some subroutines in fortran 95 programming language to compute the multimode coupling matrix, admittance matrices, scattering matrices and their operates with each other

    並利用fortran95程序設計語言編寫了用來計算波導階梯的多模耦合矩陣、多模耦合矩陣與廣義導納矩陣的級聯、廣義導納矩陣之間的級聯以及廣義導納矩陣和廣義散射矩陣之間的互相換算等的矩形波導平面不連續性模式分析的子程序。
  10. In this paper the basic principle of the method of characteristics is described, and is constructed an explicit scheme for dam break simulation of one - dimensional dam instant all break waves flow of a low dam with rectangle section and a huge dam with trapezia section, and of two - dimensional dam instant part break waves flow with simplest space operator splitting

    本文模擬了一維矩形斷面低壩和梯形斷面巨型壩瞬間全潰的洪水波演進過程，給出了與分析解的比較，並結合運算元分裂的特徵線法對二維瞬間部分潰壩時洪水波的演進過程進行了數值模擬。
  11. An interferometric lithographic experimental system with maskless and multi - beam exposure is built. an experimental system with wavefront divided by a trapezoidal prism and with selectable diaphragms for kinds of multi - beam, multiple - exposure interferometric lithography research is proposed. the experimental study on interferometric lithography is carried out

    建立了無掩模多光束多曝光干涉光刻實驗系統，提出了一種採用梯形棱鏡進行波前分割和利用可選擇光闌進行多種多光束多曝光干涉光刻研究的實驗系統，進行了干涉光刻實驗研究，對模擬和實驗結果進行了分析。
  12. The non - ideal bemf waveform of bldcm is often caused by two facts. one is that the platform width of bemf waveform is less than 120 ; the other is the cogging harmonics existed in the bemf waveform

    非理想反電動勢波形的無刷直流電機有兩種情況，一種是反電動勢的梯形波的平頂寬度小於120 ；一種是由於磁場分佈受齒槽的影響，反電動勢存在齒諧波，使其波形發生畸變。
  13. To guarantee the validity and speediness insimulation, the back - emf is generated using piecewise linear curves. in the double loop of control system, a pi controller is adopted in the speed loop and a hysteresis current controller is adopted in the current loop

    為保證模擬快速性和有效性，模型採用分段線性法生成梯形波反電動勢，系統採用雙閉環控制:速度環採用pi控制，電流環採用滯環電流控制。
  14. The ideal bemf waveform of bldcm is trapezoid with 120 ! platform width. in the 120 conduction mode, the stator current is not ideal due to the stator inductance, and the torque ripple occurs

    理想的永磁無刷直流電動機的反電動勢的波形是120平頂的梯形波，在三相六狀態120導通方式控制下，電流由於電機定子電感的存在而不是理想方波，因此產生了換相轉矩脈動。
  15. For the bldcm which has a neither sinusoidal nor trapezoidal back - emf, that is, for a general shape back - emf bldcm, this dissertation proposes a novel id = 0 vector control method. by this method, the iq for a constant torque to produce is calculated through coordinate transformation, and the reference iq is tracked by vector control in the dq0 frame

    對于實際反電動勢波形既非正弦又非梯形波的無刷直流電動機，提出一種新型的任意波形反電動勢無刷直流電動機的i _ d = 0矢量控制方法，通過坐標變換浙江大學博士學位佑文摘要求解產生恆定電磁轉矩所需的q軸電流，並在dqo坐標系下通過矢量控制對q軸參考電流進行跟蹤。
  16. Continuous - time analog filter is the only method when processing high frequency signal ( usually above 1mhz ) in low power consumption. it has been widely used in the area of communication, electronic measurement, instruments, autocontrol, etc. it ’ s especially used in digital and analog mixed signal processing and communication integrated circuit. current - mode filter becomes the new research direction in the world, as it ’ s high speed, low power consumption and simple configuration

    提出了基於ota的多功能電流模式雙二階濾波器，基於ota的八階切比雪夫濾波器，用模擬lc梯形電路法設計橢圓低通濾波器時，在傳統的狀態變量選取方法的基礎上，用改進后的狀態變量選取方法得到了（ k + 1 ）階橢圓函數低通濾波器的簡化信號流圖，實現了簡化的基於ota的橢圓低通濾波器電路。
  17. In the numerical simulation, the open boundary and 1 : 1 slope on the end of the wave tank are considered with the other conditions same as the physical experiment ; the interaction between surface waves and the triangle / trapezium sandbars on the seabed is also studied

    數值模擬中，除了對水槽末端為開邊界及1 ： 1斜坡、其餘條件與物理模型試驗相同的情形進行了研究之外，也對波浪與三角形和梯形沙壩地形的相互作用進行了研究。
  18. Optimization of a novel ladder - type structure tunable optical filter

    新型階梯形可調諧光濾波器的優化設計
  19. Design of tunable optical filter using ladder - interference - type structure

    一種梯形干涉鏈可調諧光濾波器的設計與研究
  20. The numerical model based on vof method gives the bragg resonance phenomena and the resonant reflection coefficient agrees well with the result of physical experiment. the numerical simulation on the interaction between surface waves and the triangle / trapezium sandbars on the seabed also shows the bragg resonance and the resonant period matches the davies " prediction

    應用vof方法所建立的數學模型，在與物理模型試驗相同條件下，數值模擬反映出的bragg共振現象及得到的最大反射系數與物理模型試驗結果吻合；對波浪與三角形或梯形沙壩地形相互作用的數值模擬也較好地反映出了bragg共振現象，共振周期與davies理論預測一致。
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