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vector sum 【數學】矢和。

veda

Results the doppler spectrum of the combined motion of the chamber and the fluid was the vector sum of their doppler signals . conclusion cardiac motion alters the doppler signal derived from blood flow and this effect should be considered in the doppler flow velocity measurement 結論通常所謂的血流速度頻譜實際上是血細胞在心臟內流動速度和心臟運動速度的矢量和,即兩項運動的復合頻譜,所以,為減少誤差,在用多普勒血流速度頻譜測定血流參數時,應考慮校正問題。

While two ( or more ) electromagnetic waves of the same frequency , same direction of vibration , same phase or constant phase difference superpose in space , the amplitude of composite wave is vector sum of the amplitude of each wave 由兩個(或兩個以上)頻率、振動方向相同、相位相同或相位差恒定的電磁波在空間疊加時,合成波振幅為各個波的振幅的矢量和。

In so far as linear motion is concerned , a body is in equilibrium if the vector sum of the forces acting upon it is zero 就線性運動而論,如果作用于嚴格物體上的諸力的矢量之和是零,那么這個物體就處于平衡狀態。

Multi - factors risk analysis for investment project amp; amp; weighted vector sum 投資項目多因素風險分析與加權矢量和

Vector sum excited linear prediction 矢量和激勵性預測編碼

Vector sum excited linear prediction vselp 矢量和激勵線性預測

Vector sum excited linear prediction selp 矢量和激勵性預測編碼

As mentioned above, we have not explicitly used the first condition for equilibrium, that the vector sum of the forces be zero . 如上所述,我們沒有直接應用第一平衡條件,即力的矢量和為零。

Any two vectors whose vector sum equals a given vector are called the components of that vector . 假如任意兩個矢量的和等于一個給定的矢量,這兩個矢量就稱為該給定矢量的分量。

In an infinite dimensional space there always exist two subspaces whose vector sum is different from their span . 在一無限空間中恒存在兩個子空間,其矢量和與其張成空間不同。

In a dynamic situation the vector sum of the forces acting on the body vanished as in the static case . 在動力學狀態下,作用在物體上的力的矢量和與靜力學情形一樣化為零。