弦模型 的英文怎麼說

中文拼音 [xiánmóxíng]
弦模型 英文
string model
  • 模 : 模名詞1. （模子） mould; pattern; matrix 2. （姓氏） a surname
  • 模型 : 1 （仿製實物） model; pattern 2 （制砂型的工具） mould; pattern3 （模子） model set; mould patter...
  1. There are other models of dark energy besides those based on scalar fields. one scenario is " solid " dark matter, typically based on networks of tangled cosmic strings or domain walls

    當然亦有些黑暗能量理論模型並未引入純量場的觀念，其中一個假設是實黑暗物質的存在，這些物質可以是糾結的宇宙弦網路或區域墻。
  2. The robotic fish model selected in this paper which consider an idealized bcf propulsive fish model that consists of only three links : the rigid body in the foreside ; the high aspect ratio caudal fin ; the caudal peduncle which connects the caudal fin and the body

    機器魚的模型建立是把理想的bcf推進式魚類分為三個部分，分別是：前部剛性的身體，大展弦比的尾鰭和一個連接以上兩部分的尾頸。
  3. In order to imitate tune tail fin better, a flexible fin only in chordwise is considered. results shows that flexibility can increase the propulsive efficiency and cause small decreases in the average thrust compared with a rigid caudal fin with similar motion. next, a comparison between the rectangle fin and the lunate fin is given

    為了使數學模型更貼近生物模型，本文又將尾鰭處理為只考慮弦向變形而不考慮展向變形的柔性體，兩者對比的結果表明，柔性翼使得平均推力減小，但是，對具有相同推力的柔性翼比剛性翼具有更高的效率。
  4. Experiments are performed and results show : 1 the popular retrieval models the okapi s bm25 model and the smart s vector space model with length normalization do not perform well for document similarity search ; 2 the proposed model based on texttiling is effective and outperforms other models, including the cosine measure ; 3 the methods for the three components in the proposed model are validated to be appropriately employed

    我們通過實驗驗證了以下三點： 1 trec中的常用信息檢索模型不能很好地解決文檔相似搜索2我們提出的基於texttiling技術的模型是有效的，性能優于其他模型3我們提出的模型中所採用的方法是有效的，包括利用texttiling技術進行文本子主題分割，利用餘弦公式來計算文本塊之間的相似度，以及利用最優匹配方法來求解文檔之間的總體相似度。
  5. So cross section and particle production are not calculated consistently. and it is difficult for gri5ov - regge theory to include hard process. the parton 6ased gri6ov - regge theory provide a solution : elementary scatterings happen in parajlel, described phenomenologically as pomeron exchanges

    因此，在nexus中pomeron的色弦形成方式就與其它模型很不相同；即使只有一個pomeron交換，色弦的端點也是海夸克和反夸克，而不是價夸克。
  6. The knowledge of these initial collision is crucial for any theoretical treat - ment of a possible parton - hadron phase transition, the detection of which being the ultimate aim of all the efforts of co1liding heavy ions at very high energies. the parton model allows to calculate inclusive cross sections as a convolution of any elementary cross section with parton distribution functions, assuming that factorization works. the disadvantage is that tlle first interaction is coilsidered quite differently from the subsequent ones in case of multiple scattering

    其它的弦模型在計算幾率時，忽略了入射能量在pomeron之間的分配，破壞了能量守恆，而且把pomeron作為全同粒子處理，即pomeron之間是不可區分的；然而在處理粒子產生時，這些模型雖然考慮了能量守恆，但是第一個pomeron的粒子產生與其它的pomeron很不一樣? ? pomeron在粒子產生時不是全同的。
  7. This thesis is organized in two parts : the first part of this thesis focuses on strangeness production at sps energies. the strange baryon and strange meson pro - duction at sps energies are modeled via luciae model which includes the reseat ter - ing

    我們的工作目標主要集中在用建立在強子和弦機制上的高能核反應模型- luciae ，模擬wa97和na49實驗中的奇異重子和奇異介子產生的數據。
  8. Combined with the mp algorithm the model can wipe off perceptually irrelevant sinusoids and control the distribution of intrinsic model noise

    將該模型與mp演算法配合，可以去除感知上無關的正弦波，控制模型噪聲的分佈。
  9. The experiments verify that with these new technologies, the amount of sinusoids can be greatly reduced and the tracking efficiency can be greatly improved

    實驗證明，將這兩種方法與參數心理聲學模型相結合，可以有效地減少所需的正弦波數量，大大提高正弦波跟蹤的效率。
  10. Permanent magnet synchronous motor ( pmsm ) drived by triphase sinusoidal current is research object in this paper. its mathematics models in several coordinate are set up, controlling principles of flux linkage and torque are discussed under dtc and the block diagram of pmsm with dtc is presented

    本文以三相正弦波驅動的永磁同步電機（ pmsm ）為研究對象，建立了其在不同坐標系下的數學模型，並深入探討直接轉矩控制中永磁同步電機的磁鏈和轉矩的控制思想，給出控制方案。
  11. Based on this milti - hierarchical model, application method for information organization of part is presented. chapter 3 proposes a new rule of arbitrary maximum angles of chord for triangulation and locale optimum, which avoides calculating angles of conventional methods in mesh simplification. moreover, with the introduction of arithmetical average windage concept, optimum method for the boundary mesh retriangulations is presented

    第三章針對曲面網格簡化操作過程中出現的空洞剖分問題，討論層次模型的網格優化方法，提出了基於弦內角最大準則的局部網格簡化方法；針對網格曲面上存在的曲折邊界缺陷，提出以邊界輪廓算術平均偏差作為邊界曲折程度評定參數的邊界平滑優化剖分方法。
  12. The collective interaction between strings and the reduced strange quark production mechanism. luciae model can describe the yield and the transverse mass spectra of produced strangeness

    Luciae模型包含了弦-弦之間的集體相互作用，產生粒子的次級再散射以及奇異夸克壓低的約化機制對奇異產生的影響。
  13. Taking thickness of web members and main chords as design variables and the lightest weight of crane booms as objective junction, considering constraints of rigidity and stability etc., this paper establishes the math model of optimal design

    摘要選取起重機臂架的腹桿壁厚和各節臂架的主弦桿壁厚為設計變量，以最小重量為優化目標，考慮剛度和穩定性等約束條件，建立優化數學模型。
  14. 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。
  15. The beam - on - dynamic - winkler - foundation ( bdwf ) model was utilized to determine the lateral dynamic response of a pile with finite length in a viscoelastic soil. an analytical solution was obtained in the time domain for the vibration of a pile under a laterally cyclic force applied at the pile head. based on the solution, the transient response of the pile loaded by semi - sine force was acquired with superposition principle

    首先，基於動力winkler模型（ bdwf ）對粘彈性地基中有限長樁的水平動力響應問題進行求解，得到了單樁在樁頂受水平簡諧荷載作用下的時域解析解，並在此基礎上通過疊加原理得到了半正弦激振條件下的瞬態解析解。
  16. Focused on the sine model of the speech signal creation, and finished the reconstruction by using it. at the same time, based on the knowledge of digital signal processing, reconstruction by harmonic correction and time variant digital filter was proposed

    分析了語音信號產生的正弦模型，並在此基礎上完成了骨導信號的語音重構；與此同時，結合數字信號處理知識，分別用諧波修正和時變數字濾波器的方法，完成基於骨導信號的語音重構。
  17. In order to encode the parameters of sinusoidal model, the vector quantization techniques for amplitude parameters and the differential quantization for frequency parameters are proposed and discussed. at the same time, the frequency bin model, the random phase model and the zero phase model are also discussed

    針對正弦模型參數的量化編碼，提出了幅度參數矢量量化、頻率參數差分量化等方法，並探討了頻率盒量化模型以及隨機相位和零相位模型等。
  18. The lund string dynamical model frifiof, luciae model and jpciae model were introduced in the third chapter. luciae model is based on frifiof model, while jpciae model is based on pyth1a. paciae model, a new model based on parton and hadron cascade is being improved and its physical ideas is introduced

    論文的第三章主要介紹了建立在lund弦模型基礎上的強子和d玄級聯的fritiof模型、 luciae模型和jpciae模型，其中luciae模型是建立在frjtiof棋型的基礎上，而jpciae模型是建立在pythia的基礎之上的。
  19. In this paper, the quantitative performances of the above models are compared using experiments. because the cosine measure is not able to reflect the structural similarity between documents, a new retrieval model based on texttiling is proposed in the paper

    本文對這些已知模型在相似搜索問題上的性能做出了實驗對比，並且針對餘弦模型無法考慮文檔結構相似性的缺點，提出了基於texttiling技術的相似檢索模型，該模型考慮了文檔的子主題結構信息。
  20. A flexible and efficient sinusoidal modeling using matching pursuits suited for signal compression

    一種適于信號壓縮正弦模型的匹配跟蹤方法
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