矢端線 的英文怎麼說

中文拼音 [shǐduānxiàn]
矢端線 英文
hodograph curve
  • : Ⅰ名詞1. (箭) arrow 2. (尿) excrement; dung; feces 3. (姓氏) a surname Ⅱ動詞(發誓) vow; swear
  • : Ⅰ名詞1 (東西的頭) end; extremity 2 (事情的開頭) beginning 3 (門類; 方面) item; point 4 (原...
  • : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
  • 端線 : back boundary line
  1. Research about ctod and its components 8 ", " shows that the direction angle of ctod vector is identical with the fracture angle of void - mode fracture, which is obtained through experiments, and it is also identical with the result got by peak value line of stress triaxiality. besides, 8 i " was compare with vgc as criterion for initiation of void - mode fracture

    對裂紋尖張開位移ctod及其張開型分量~ 1和剪切型分量~ 11的分析表明,在試件發生韌窩型斷裂時,按照圓弧裂紋中ctod量的垂直方向預測的斷裂角與試驗測得的斷裂角符合較好,與三軸度脊預計的結果也比較一致。
  2. After giving the legendre polynomials approximation to parametric speed of the curve, the author gives the jacobi polynomials approximation to parametric speed with endpoints interpolation. from this, two algebraic offset approximation algorithms, which preserve the direction of normal, are derived

    給出了曲參數速度的legendre多項式逼近,進一步給出了參數速度的插值區間點的jacobi多項式逼近,由此導出了保持法平移方向的兩個等距代數有理逼近演算法
  3. Another algorithm is based on pixels : sample many points along the curve, round them to the nearest integer and set each pixel the computed point falls in. although this algorithm uses integer arithmetic, it provides the smooth curve possible at the expense of computation time as many points have to be computed to ensure that no gaps are created along the curve. furthermore these two algorithms we mentioned above is appropriate for low degree parametric curves, for high degree parametric curves, we usually approach them by using low degree rational parametric curves, the generating curve ' s fairness property is not very good

    我們知道當節點量的兩節點均為k重節點且無內節點時, b樣條基函數退化為bemstein多項式,因此該生成演算法還可推廣到b能ier曲中,具有廣泛的應用價值、同樣地,在cad和cagd中,有理b樣條曲,特別是非均勻有理b樣條曲( nurbs )已經成為曲曲面設計中最廣為流行的技術,然而對這些曲目前也尚無很好的曲生成演算法,因此有理b樣條曲的生成演算法無疑有著更重要的意義
  4. Carry on emulation to melp standard, realize that the compression of the pronunciation file is solved and pressed. first this thesis sample to wav file, carry on the speech to analyze and draws with the parameter to the speech data of every frame. these parameter include pitch, bpvc, jitter, lpc, etc. then, these parameters will be quantized by msvq technology

    該系統首先對語音信號進行采樣;按幀對語音數據進行語音分析和參數提取,提取的參數包括基音周期( pitch ) 、多帶清濁音判別、非周期抖動標志、性預測參數( lpc )等語音生成模型參數;接著對這些參數進行了量化,量化採用了多級量量化技術;最後在解碼對各個量化參數進行解碼,利用這些參數結合語音合成模型重構語音。
  5. Presents a new method of constructing boundary conditions for nurbs interpolotion, which makes it unnecessary to know the deriratives of curve ends, and solves the problem of zero curvature at curve ends, and enables designers to control the shape of the two end segments of curve easily and freely by simply adjusting the curvature coefficients and discusses the influences of curvature coeffients on the shape of the end segments of curve

    提出一種新的用於nurbs曲插值的構造邊界條件的方法.該方法不需要已知曲點的切,並且解決了點曲率為零的問題;它使得設計者可以通過簡單地調整首末點曲率參數便可以隨意地且很容易地控制曲首末兩段曲的形狀.最後還討論了曲率參數的取值對曲部形狀的影響
  6. And it can be controlled running at a rating slip, when its efficiency is the highest. then, simulation model of lim vector control system is constructed, which is proved accurate by simulation results under different speed and different load. and it is concluded that lim efficiency is lower under light load or low speed

    其次,建立了考慮邊效應的直感應電機量控制系統的模擬模型,不同速度和負載下模擬結果驗證了模型的有效性,得到了電機在輕載或低速運行時效率較低的結論。
  7. In short, the analysis of arc - tip fracture shows that : the initiation of void - mode fracture can be judged by vgc criterion, or by j ". according to sx criterion ; fracture direction of void - mode fracture can be determined by ctod and peak value line of stress triaxiality. the mesomechanics mechanism of shear - mode fracture need further study, and analysis found direction of plastic belt is consistent with the direction of shear - mode fracture

    綜上所述,本文通過對圓弧尖裂紋的分析表明:對于韌窩型斷裂的起裂,可以依據-復合型斷裂的sx準則按照i ~ 1來預測起裂載荷,也可用v _ ( gc )判據來預測起裂載荷,二者結果相近;對于韌窩型斷裂的斷裂角,用ctod量方向和三軸度脊方向判斷均和試驗結果基本。
  8. The paper, in the way of math morphology, manages to classify the linear elements, the same type but different width in the scanning, and result in the two - valued linear image in the same level. in the fine division of the target image, a way of math morphology based on the double structure of cell stencil is put forward, which prevents the terminals and the acnodes from losing and also reduces effectively time in doing so. as the result of the framework of the fine division, vector method is formed in which its track is monitored by using dynamic change of pace about freeman ' s chain code

    本文用數學形態學相關理論方法實現了對掃描圖像中具有同一型但不同寬的狀要素進行分類,在同一層上得到同一寬的二值狀要素圖;在對此目標圖像進行細化時,提出了基於雙結構單元模板的數學形態學細化演算法,用該演算法對實際的狀要素進行細化,避免了點、孤立點等信息的丟失,且由於是并行處理,有效地提高細化速度;對于細化后的骨架,提出了基於freeman鏈碼的動態改變步長保持精度跟蹤量化方法。
  9. Besides, the motor control system based on the digital signal processor ( dsp ) is analyzed. the hardware circuit about the dsp system is designed. the dsp control software is programmed on the field magnetic orientated control and the space vector pulse width modulation ( svpwm ), that establishes the ' basis for implementing the modern control principle

    然後,又對基於數字信號處理器( dsp )的電機控制系統進行了分析,設計了dsp系統的硬體電路,並編寫和調試了空間磁場定向控制和空間量脈寬調制( svpwm )的dsp系統的軟體,為直電機現代控制策略的具體實現奠定了基礎,並提出了對部效應進行補償的控制方法。
  10. When this csi is in terms of channel covariance feedback, the transmit directions for achieving ergodic capacity correspond with the eigenvectors of the channel covariance matrix, while the optimal power distribution can not be solved in closed form

    當發射具有通道協方差矩陣信息時,使得平均通道容量達到最大的發射方向和通道狀態協方差反饋矩陣的特徵量相一致,而相應的發射天上的最優功率分配則難以解析獲得。
  11. Using the optimal control theory an optimal control law of agile turn is proposed enabling to eliminate velocity component in vertical director of initial sight under thrust vector control

    應用最優控制理論,提出一種最佳快速轉彎控制律,能在推力量控制下消除終時刻垂直於初始視方向上的速度分量。
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