逆直線 的英文怎麼說

中文拼音 [nìzhíxiàn]
逆直線 英文
straighten anti-curve line
  • 逆 : Ⅰ形容詞1 （方向相反） contrary; counter 2 [數學] inverse; converse Ⅱ動詞1 （抵觸; 不順從） go aga...
  • 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
  • 線 : 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...
  • 直線 : 1. （不彎曲的線） straight line2. （急劇的） steep; sharp
  1. Presents a new method for fairing of curves which has a small flexibility based on fitting the derivative of second order of curves. we fit the derivative of second order of curves by a polynomial fitting, then find an indefinite integral of this polynomial to get a approach of curves. otherwise, we discuss the analyze of the error and the optimize of fairing to this arithmetic

    提出了一種針對小撓度曲線的逆向曲線光順演算法，該演算法直接擬合曲線型值點列的二階導數曲線，然後通過兩次積分來反求出光順后的曲線，並對該演算法的誤差分析、效果分析、光順優化等問題進行了深入探討。
  2. In this thesis, ga is used to optimize the beam weights of intensity modulated radiation therapy ( imrt ) inverse planning, and 2d and 3d isodose contour as well as dose volume histogram ( dvh ) are used to evaluate the treatment plan

    本文應用遺傳演算法優化逆向調強放療計劃中射束的權重，用二維等劑量線、三維劑量分佈和劑量體積直方圖來評估計劃的優劣。
  3. The modulating signals of firing delay angle at the rectifier and firing lead angle at the inverter, and the excitation voltage are chosen to be control variables. the offset of the current of dc line and the extinction angle and the power angle of generator are chosen to be control outputs. then a nonlinear controller is designed for the system under study according to direct feedback linearization theory

    以整流側觸發延遲角的調節信號、逆變側觸發超前角的調節信號以及發電機勵磁電壓作為控制變量，以直流線路電流、逆變側關斷角以及發電機功角的偏移量作為目標輸出，用直接反饋線性化方法設計了系統的非線性控制器。
  4. The auxiliary modulating signals of the current controller at the rectifier and the extinction angle controller at the inverter, and the reference voltage of exciter are chosen to be control variables. then the all - state feedback linear optimal controller is designed

    以直流系統整流側電流控制器的輔助調節信號、逆變側關斷角控制器的輔助調節信號以及勵磁系統參考電壓作為控制變量，設計了系統的全狀態反饋線性最優控制器。
  5. Influence of dc - rail zero - voltage notch on the output of the inverter is investigated, and an important conclusion is obtained that the direction of output current of the inverter is not effected by the voltage deviation produced by dc - rail zero - voltage notch, on the basis of which, a new simple correction approach is put forward. experiment results show that the proposed correction method is effective

    探索了直流母線零電壓凹槽對逆變器輸出特性的影響，得出了母線零電壓凹槽形成的輸出電壓偏差與逆變器輸出電流方向無關這一重要結論，在此基礎上，提出了一種簡便的校正新方法，通過試驗驗證了該校正方法的有效性。
  6. This paper studies the anti - lines theory and it ' s mathematic model detailed

    詳細探討了逆直線的原理及模型建立和求解過程。
  7. The inverted pwm changing electric current the technique is applied in the prototype model. the prototype model was tested and operated on spot, power factor could reach beyond 0. 95, the effect of following modulating voltage was better, the curve of factor of modulated voltage of exchanging systems changed following load rate was linear, the output of wave form was a flat and steady sinusoidal wave

    樣機採用了逆變式pwm變流技術，對其進行了現場測試與試運行，測試結果是電網側的功率因數可達0 . 95以上，跟蹤調壓效果良好，變流系統輸出調壓系數（ k ）隨負載率（ p ）的變化曲線基本滿足直線關系，輸出波形呈平滑穩定的正弦波。
  8. A novel topology of dc - rail zvt voltage source three - phase pwm inverter is advanced. the principle, design considerations, modulation index and efficiency of the proposed inverter are discussed in detail

    提出了一種新型直流母線零電壓過渡電壓源三相pwm逆變器，並對該電路的工作過程、參數設計、調制系數以及工作效率等進行了詳細的分析和試驗研究。
  9. In chapter 4, mathematical theory about related coefficient and fitting of straighten anti - curve line is introduced at the beginning of this chapter, then how to program to calculate related coefficient is introduced including discussing the appearance of straighten anti - curve line in bitmap, searching the ends of straighten anti - curve line, calculating the angle bitmap should be turned, calculating related coefficient after bitmap has been turned

    第4章首先介紹了有關相關系數以及直線擬合的數學理論，然後闡述了求解逆直線相關系數的編程思路，其中包括對逆直線在位圖中擺放方式的分類討論、逆直線端點的搜索、求解旋轉角度、旋轉后求解相關系數等幾個環節。
  10. The data needed by the calculation system is provided by the design section. the study can improve the efficiency of frame bending for shipyards

    船體型材加工逆直線方法及劃線機研究可以提高造船工業中的型材彎曲加工效率，縮短造船周期，減輕勞動強度。
  11. At last, straighten anti - curve line is fitted

    最後對逆直線進行擬合。
  12. Study for the software that is used to calculating and drawing the anti - lines

    進行了船體型材逆直線加工的計算系統軟體的開發。
  13. In this study, from the anti - lines calculating to the anti - lines drawing, the information flows without blueprint

    在本課題的研究里，從逆直線的計算到逆直線的繪制，實現了無圖紙的信息流動。
  14. This paper attempts to study two items : the software for ship frame anti - lines calculating, and the cnc machine for anti - lines drawing

    本文主要進行了船體型材逆直線加工的計算系統和逆直線數控劃線機的研究。
  15. In chapter 2, the theories about straighten anti - curve line are introduced concisely. the basic principle and calculation about straighten anti - curve line are included

    第2章扼要地介紹了逆直線的相關理論，其中包括逆直線的基本原理及其數值計算的演算法。
  16. In chapter 3, the basic theories about bitmap are introduced as the preparation for programming at the beginning of this chapter, then the way in which the straighten anti - curve line is identified from background is introduced in detail and programmed

    第3章首先介紹了位圖圖像的基本理論，為編寫圖像處理軟體做好理論準備，然後較詳細地闡述了肋骨逆直線的提取及其演算法。
  17. In chapter 1, the aim of the study is proposed. the development and present situation of section processing, straighten anti - curve line method and visual inspect technology are introduced. at last, the main content of this paper is proposed

    本論文共六章，具體內容為：第1章概述了國內外船體型材加工的現狀、逆直線法的研究現狀以及視覺檢測技術的發展狀況，論述了進行本課題研究的目的及意義，提出了本文研究的主要內容。
  18. In this paper, reversibly nonlinear transport in both dc response and ac response and relatively electrical conduction mechanism of polymer / conducting filler composites were reviewed, and the potential applications of polymer / conducting filler composites is outlooked

    文中闡述聚合物導電填料復合材料在直流電、交流電作用下的可逆非線性導電行為，以及其相關導電機理，並展望非線性導電特性的應用前景。
  19. The reversible temperature coefficient of magnetic flux of ndfeb - ferrite composite bonded magnets as a function of the content of ferrite is concave downwards, and that of ainico - ferrite magnets as a function of the content of ferrite is convex upwards, the reversible temperature coefficient of magnetic flux of the other four binary composite bonded magnets and its single component follow the pattern of linear relationship

    釹鐵硼和鐵氧體復合粘結磁體的磁通可逆溫度系數與鐵氧體含量的關系曲線下凹，鋁鎳鈷和鐵氧體復合粘結磁體的磁通可逆溫度系數和鐵氧體含量的關系曲線上凸，其餘四組復合粘結磁體的溫度系數隨著單一磁粉含量變化基本呈直線關系。
  20. Treatment has gained an upper hand in recent years as prices for anti - retroviral drugs have plummeted

    近年來，治療方面因抗逆轉錄病毒藥物價格的直線下降而取得了一定的功效。
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