弦定理 的英文怎麼說
中文拼音 [xiándìnglǐ]
弦定理
英文
law of cosines-
The completion problems of partial inverse m - matrix for 3 - chordal graph are discussed by using graph theory and the completion theorems for 3 - chordal graphs are presented in this paper
摘要利用圖論的相關知識，在1 -弦圖、 2 -弦圖完備的基礎上探討了3 -弦圖的完備問題，給出3 -弦圖的完備定理。Piano timing is based on diapason normal and " the twelve melody of averages " and certain programs of musical rules as well as auditively distinguished " beat note " and it uses some instruments to adjust the tension of the piano ' s strings and the normal functioning of a piano ' s key mechanism
摘要鋼琴調律是以國際標準音高，以律學中的「十二平均律」為理論依據，以一定的生律程序、以聽覺分辨「拍音」為判斷依據，使用專用工具對琴弦的強力及機件的合理運動進行調整。The signal we named it fundamental wave ; according to the fundamental wave, coefficients of the fundamental wave can be lined in a sequence. when the unique of the dissolve of the fundamental wave can be confirmed, the sequence of the coefficients can be regarded as one of representation forms of the signal itself ; theory of dissolvable signal shows that when order of the matrix of fundamental wave sampling equals to number of fundamental waves, the sequence of the sampling values from sampling points must be matched one by one with the sequence of the coefficients of fundamental waves. the sampling composed by sequences of the sampling values must be full sampling ; the relevant deductions of the theory of dissolvable signal shows that when sampling the signal, sampling frequency must be lager than the ratio of the number of fundamental waves to the occupation time of the fundamental waves ; to band - limited signals, when the fundamental wave is a sine signal, the results from the relevant deductions of theory of dissolvable signal is coherent to the classic sampling theory
本文通過分析認為，當信號集中的任一信號可表示為一系列已知信號的線性代數和時，信號集便構成可分解信號集，已知信號稱為基波信號；對可分解信號而言，基波系數構成一序列，當對指定的基波信號集分解唯一確定時，系數序列本身便是信號的一個表示；可分解信號采樣定理指出當基波樣值矩陣的秩等於基波數時，則由采樣點處的采樣樣構成的樣值序列必與基波系數序列一一對應，從而由該樣值序列構成的采樣必為完全采樣；可分解信號采樣定理中的推論指出，對信號集進行采樣，采樣頻率必須大於其信號分解的基波數與其對應時長之比；對有限帶寬信號，若基波信號為正弦信號時，由可分解信號采樣定理推論給出的結論與經典采樣定理一致。Thereout comes the conclusion at last but not the least : the task of lawmaking is the most urgent affair. to adopt various viewpoints and choose the most beneficial one is truly the all - important and best method
由此得出結論：對風險投資基金的理論性認識不應則一恆定標準局限；風險投資基金立法為當務之急、勢在箭弦；納百家之言、采利我之策才為最佳之選。For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。Based on the lambert law of cosines, a form of ladar equation, which is easy to apply, is deduced. an effective method of calculating the maximum detectable distance is proposed based on the theory of signal detects statistics
根據朗伯餘弦定律推導出激光雷達方程的一種便於使用的形式，根據統計信號檢測理論提出了一種計算作用距離的有效方法。We would simply require them to recognize, appreciate, and memorize the great pieces of language of the past - literary equivalents of the pythagorean theorem and the law of cosines
我們僅僅需要他們認識、欣賞、記住歷史上偉大的語言篇章? ?就好比是數學中畢達哥拉斯定理和餘弦定理。( 4 ) periodicity and pseudo - modulation when sampling sinusoidal signals the periodicity and pseudo - modulation due to non - integral sampling of sinusoidal signal are analyzed
著重討論連續信號采樣過程中抽樣定理對正弦信號的非整數抽樣序列的周期性，偽調制性和調制周期的周期性。The importance of the various solutions to one question - supported by the methods of the addition theorem of the cosine law
用餘弦的加法定理不同的證明來說明一題多解的重要性Analyze, design and simulate the digital down - convert frequency. first, the analogue if signal is converted to digital if signal in one a / d convertor which used passband sampling theory. the digital if signal is then passed to a pair of digital mixers operating in phase quadrature for mixing the if signal to baseband signal
首先利用帶通采樣定理對中頻模擬信號進行a / d變換后將其混頻到基帶，然後用平方根升餘弦滾降濾波器同時完成低通濾波和匹配濾波雙重作用，以提高解調器的效率。Abstract : basing on the introduction of brim - vector and face - vector, by means of analogy, the paper popularizes the cosine - theorem from flat - triangle to vacuum - polygon and arbitrary - polyhedron, concludes a series of generalized cosine - theorems which have symmetric and conformable form, and presents short and strict proof
文摘:在引入邊矢量及面矢量概念的基礎上，以類比作為手段，對餘弦定理進行由平面三角形到空間多邊形乃至任意多面體的一系列推廣，得出了形式對稱一致的一組廣義餘弦定理，並給出了其簡捷嚴謹的證明。Thus the resistance factor and vibration modes of the soil layer are obtained and used to analysis the pile response. by considering the interaction between the soil layer and the pile with boundary condition of continuity of displacement and equilibrium of force at the interface of soil layer and pile, the dynamic equilibrium equation of pile is solved and an analytical solution for the pile response in frequency domain is yielded, which is used to define complex stiffness and mobility at the level of the pile head. based on the convolution theorem and inverse fourier transform, a semi - analytical solution of velocity response in time - domain subjected to a semi - sine exciting force is given
首先通過引入勢函數方法對土體位移進行分解，從而將土體動力平衡方程解耦，求解得到了土層的振動模態和阻抗因子，然後利用該解以小應變條件下樁土接觸面上力平衡和位移連續條件來考慮樁土耦合作用，求解樁的動力平衡方程，得到了樁頂的頻域響應解析解、復剛度和速度導納，利用卷積定理和傅里葉逆變換，求得了半正弦脈沖激振力作用下樁頂速度時域響應半解析解。Solving the helen theorem with the cosine theorem
用餘弦定理證明海倫公式New proofs of n - dimensional sine theorem and cosine theorem
維正弦定理和餘弦定理的新作用New proofs of the n - dimensional sine theorem and cosine theorem
維正弦定理和餘弦定理的新證明Wide cosine theorem of k dimension simplex
維單形上的廣義餘弦定理Sin - cosine theorem and its application
正餘弦定理及應用Application of cosine law in azimuth determination of a new roadway
餘弦定理給定新開切巷道方位時的應用Solving and measuring parameters by cosine law
利用餘弦定理求解測設參數This dissertation chiefly studied the theory of aoa detection using polarization. polarization coding aoa detection was put forward after compared with some other ways to detect laser aoa. the method based on law of cosines of radiation
本論文分析和比較了激光束定向的幾種方法，基於輻射通量的餘弦定理，根據偏振光特性，提出了偏振編碼測向的方法。分享友人