正弦 的英文怎麼說

中文拼音 [zhēngxián]
正弦 英文
[數學] sine正弦尺 sine protractor; 正弦曲線 sine curve; sinusoid
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  1. The cosine rather than the sine is customarily used in this case.

    在這種情況下，習慣上用餘弦函數而不是正弦函數。
  2. We derive the addition formulas for sine and cosine from the arithmetic of complex numbers.

    用復數算術推導了正弦，餘弦的加法公式。
  3. The expression for g can be rewritten in terms of trigonometric sines and cosines.

    關于g的表達式可以重寫成三角函數的正弦和餘弦形式。
  4. Let's now examine the simplest wave form where the profile is a sine or cosine curve.

    現在讓我們來考察最簡單的波形，它的剖面圖是正弦或餘弦曲線。
  5. The nonlinear wave shape degenerates to a sinusoidal wave.

    非線性波形衰減成正弦波。
  6. 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。
  7. Dst for discrete sine transform

    離散正弦變換
  8. In the circuit, using the way of step - by - step magnify, a normal sine wave signal through former circuit export for the next circuit, and this signal that have been magnified push the next step. the main magnify circuit use the method of high power dynatron that is parallel connection

    在迴路中採用逐級放大的方法，將一個標準的正弦波信號通過前級放大，輸出給后級，推動后級放大迴路，主要的功率放大迴路中採用大功率三極體並聯實現功率放大輸出。
  9. Analysis and calculation on stable sine electric circuit

    正弦穩態電路的分析方法
  10. The symbolic electric circuit analysis using matlab

    用相量法分析正弦穩態電路
  11. Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.

    假定兩個揚聲器都發射恆定頻率的純正弦聲波。
  12. According to the theory of scalar diffraction, first, the equipollence of spatial distribution of the plane - wave interferential field and parallel projective sine grating is discussed

    摘要根據標量衍射理論，首先討論了兩平面波干涉場的空間分佈與平行投影正弦光柵的等價性。
  13. Flatness sinewave relative to 1 khz, autorange

    平坦度相對於1khz正弦波，自動量程
  14. 4 the average power of a non sinusoidal periodic current is equal to the sum of powers of all its fourier series components

    非正弦周期電流電路的平均功率等於其傅里葉級數展開式所有分量的功率之和。
  15. The experiment apparatus has been developed, which is based on software ( labview ) and hardware ( pci board ni 6024e ). the displacements and generative force at the tip of the ipmc actuators were measured with respect to the different voltages, frequents and various waveforms which include square, sinusoidal, and triangular wave

    實驗選取了不同電壓幅值，不同頻率的方波、三角波、正弦波三種波形作為電激勵信號，利用高速攝像記錄ipmc的位移變形，並通過力傳感器實測了ipmc試樣末端的輸出力。
  16. Sine steady - state circuit by phasor graphology analyzing

    正弦穩態電路的分析與計算
  17. This has since been confirmed by russian sources ; the transmitter consists of two swept - frequency generators of sinusoidal voltage and two parallel horizontal grounded antennas, each about 60 km long

    這一點被來自俄方的消息所證實；發射機有兩個掃頻發生器，產生正弦波，同時有兩幅相互平行的水平地面天線，每個天線有60千米長。
  18. The case of a harmonic oscillator driven by sinusoidally varying force is an extremely important one in many branches.

    在許多領域中受正弦變化力策動的諧振子是一種十分重要的運動。
  19. Returns the hyperbolic sine of the specified angle

    返回指定角度的雙曲正弦值。
  20. With reduction of temperature this structure gradually transforms to the incommensurate sinusoidal structure which we have just discussed.

    隨著溫度的降低，這種結構逐漸轉變為我們剛討論過的那種不可通約的正弦形結構。
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