弦向 的英文怎麼說

中文拼音 [xiánxiàng]
弦向 英文
chord direction
  1. He would never suffer his ministers to speak about any alliance.

    他還不許大臣們向他提續弦的事。
  2. Normal chordal thickness

    法向弦齒厚
  3. Through the use of the multivalued directed angle and its related notions, it is given the sufficient and necessary conditions when the three chordal circles based on the three sides of a triangle as their chords share the same point

    摘要利用多值有向角及其相關概念，給出了以三角形每邊為弦各作一圓所得三圓共點的充要條件，推廣了已有結論。
  4. Some think of cosmic string. then they soon realize that this will require the total energy from the universe to construct the time machine out of cosmic string and hence is also impossible. that leads to the suggestion by many scientists of the not - yet - proven " chronology protection conjecture ", which says that the laws of physics do not allow time machines to the past

    在科普刊物中，我們間中便會聽說有科學家提出回到過去的方法，但經詳細研究后發現，所有這些方法都有很大的漏洞，例如有人曾經提出利用黑洞的近親蟲洞作為時光機，但這時光機只是單向：只能進入不能離開又有人曾利用宇宙弦作回到過去的工具，后來卻發現需要全宇宙的能量才能建造那時光機，所以也是不可行的。
  5. The bar directions are conveniently specified by direction cosines.

    桿的方向通常用方向餘弦來表示。
  6. The nine elements of the matrix are products of cosines of angles between the direction of a streamline at a point and the coordinate axis.

    這矩陣的9個元素系一點的流線方向和座標軸之間夾角餘弦的乘積。
  7. Three kinds of trapezoid, delta and airfoil shaped vortex generators are designed based on traditional, sub boundary layer and micro - vortex generators conceptual design, to study the influence of the shape, height, aspect ratio, chordwise position, spanwise position and direction angles of vortex generators on boundary layer separation control

    （ 5 ）綜合分析研究了渦流發生器的工作原理和設計原則。根據國內外資料，研究了渦流發生器形狀、高度、展弦比、尖削比、弦向位置、展向位置和方位角等因素對附面層分離控制效果的影響。
  8. 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。
  9. Similarly the subdominant, as part of the dominant seventh chord, has a tendency to move to the mediant

    下屬音也是如此，下屬音作為屬音七和弦的一部分，傾向于移向中音。
  10. Towards the superior orchestral works by hong kong composers

    向卓越奔馳香港作曲家管弦樂作品
  11. The results showed that : there were five stages in the rising process of the internal temperature of untreated, fire - retardant solution soaked, and fire - proof paint coated wood during the fire ; the carbonization rate of wood decreased by 21. 1 % ~ 35. 6 % and the rising speed of internal temperature also declined greatly when wood was soaked in fire - retardant solution or coated with fireproof paint ; the carbonization rate of white pine was 8. 5 % ~ 17. 4 % higher than that of the northeast china ash ; for untreated wood, the carbonization rate in tangential direction was 5. 8 % ~ 10. 5 % higher than that in radial direction ; the internal temperature of wood varies with the developing direction of combustion

    結果表明：火災發生過程中未處理木材、阻燃浸漬處理和塗刷防火徐料木材內部溫度上升過程出現5個階段；經過阻燃浸漬處理和塗刷防火塗料后，木材的燃燒炭化速度降低了21 . 1 % ~ 35 . 6 % ，內部溫度上升速度大幅度下降；白皮松木材的燃燒炭化速度比水曲柳木材的燃燒炭化速度快8 . 5 % ~ 17 . 4 % ；未處理木材沿弦向的燃燒炭化速度比徑向快5 . 8 % ~ 10 . 5 % ；木材內部的溫度變化沿燃燒推進方向不同而不同。
  12. The identification results of step and sine steering angle input showed that the proposed identification method is not only practical, but also with high accuracy

    通過方向盤角階躍輸入和正弦輸入的識別結果表明，這種識別方向盤角輸入的方法是可行的，並且具有識別精度高、運算速度快等優點。
  13. When the signal came ， chubby was off like a rocket before i could react ， and it was all i could do to hold on

    信號一發出，我還沒來得及反應，查比如弩箭離弦向前奔去，我所作的只有握緊韁繩，任它奔馳。
  14. To improve the efficiency of solution, the solution method to determine the cavitation range of blade is carried out for each chordwise string, the interaction between strings is included by spanwise iterative procedure

    為了提高求解效率，本文在確定螺旋槳槳葉上空泡范圍時採用的求解方法是針對每一個弦向「條帶」進行的， 「條帶」之間的相互影響通過沿槳葉展向的迭代考慮。
  15. Two approaches to evaluating the performance of this similarity measure and the comparison with standard cosine vector similarity measure are also described

    進一步給出了對基於本體的相似性測度方法進行效果評價的2種策略以及該方法與經典餘弦向量測度方法的比較結果。
  16. To improve document clustering, a document similarity measure based on cosine vector and keywords frequency in documents is proposed, but also with an input ontology

    為了改進文本聚類的效果，提出了將領域知識本體和文本關鍵詞詞頻相結合的基於餘弦向量的文本相似性測度方法。
  17. A method that combines category - based and keyword - based concepts for a better information retrieval system is introduced. to improve document clustering, a document similarity measure based on cosine vector and keywords frequency in documents is proposed, but also with an input ontology. the ontology is domain specific and includes a list of keywords organized by degree of importance to the categories of the ontology, and by means of semantic knowledge, the ontology can improve the effects of document similarity measure and feedback of information retrieval systems. two approaches to evaluating the performance of this similarity measure and the comparison with standard cosine vector similarity measure are also described

    介紹了一種綜合各層級分類類目和對應關鍵詞來構造概念體系並用於改進信息檢索系統效果的方法.為了改進文本聚類的效果，提出了將領域知識本體和文本關鍵詞詞頻相結合的基於餘弦向量的文本相似性測度方法.該本體面向特定領域，將關鍵詞以不同權值對應于各分類類目，通過其語義知識來改進文本相似性測度以及信息檢索系統的效果.進一步給出了對基於本體的相似性測度方法進行效果評價的2種策略以及該方法與經典餘弦向量測度方法的比較結果
  18. The three - dimensional flow - resistor network for radial and tangential gas permeability of softwoods

    針葉樹材徑向和弦向氣體滲透的三維流阻網路
  19. The blade section can be designed by parent section, thereby its chordwis circulation distributions can be worked out, and then lifting surface theory is used to design the three dimension blade geometry

    剖面採用母型剖面方法來設計，進而可確定槳葉弦向環量分佈，然後由升力面理論設計三維槳葉的幾何形狀。
  20. The theoretical deduction in chapter 3 shows that the shape of load distribution used in the arithmetic is a decisive fact of the error margin size, the more the adoptive shape looks like the actual case, the smaller the error margin will be, therefore the tilt parabola shape can instead of the actual shape of load distribution in the permissible error margin when we predicting constant loading noise caused by the tail rotor of helicopter

    在第三章中通過理論推導和計算比較發現，在預測直升機尾槳定常載荷噪聲時，其誤差大小取決于演算法中槳葉弦向載荷分佈的數學描述與實際弦向載荷分佈的吻合程度，而選取一種與實際弦向載荷分佈較為相似的斜拋物線形來預測噪聲所導致的誤差是很小的。
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