sum frequency 中文意思是什麼
sum frequency
解釋
和頻率-
Results : the sum of money of narcotics was increasing year by year, especially for morphine preparation ; but the use of pethidine for the pain control of cancer occupied the first picas in frequency
結果：我院麻醉藥品的用藥金額逐年增加，其中嗎啡制劑增幅較大，但用於止痛的麻醉藥品用藥頻度哌替啶注射劑居第一位。 -
Empty sum frequency is entered in the normal functioning of the electrical pulse frequency gradually rise to the highest frequency step electrical bad step
空載牽出頻率是指步進電機在正常運轉情況逐漸升高脈沖頻率使步進電機不失步的最高頻率。 -
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、相位相同或相位差恆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。 -
The sixth chapter studies the techniques in measuring the bearings changing rate and centrifugal acceleration, and poses several algorithms of measuring pulse doppler shift frequency changing rate. to sum up, this paper studies the key problems in soplat based on particle kinematics and some solutions to them
總而言之，本文系統地研究了基於質點運動學的單站無源定位與跟蹤領域的主要關鍵技術問題並提出了相應的解決方法，其中某些分析結果和方法可直接應用於實際的工程應用。 -
This paper gives a systematical research on high frequency distortion performance of vehicle shock absorber. we prove that the cavitation specific property is another basic cause of high frequency distortion of vehicle shock absorber. we put forward the new utility engineering theory about saturated a un - saturated high frequency distortion clearly. we also sum up the technology norms of the test of shock absorber cavitation specilic property on domestic equipment comprehensively
該文對車輛筒式減振器高頻畸變特性進行了系統研究.揭示並論證了泡沫特性是筒式減振器高頻畸變的另一類重要基本成因，明確地提出飽和與不飽和高頻畸變等工程實用新概念.文中還對使用國產設備進行減振器泡沫特性臺架試驗的技術路線進行了歸納 -
Harmonic method : the representation of tidal variations as a sum of harmonics known as constituents each of different frequency, amplitude and phase
調和法：將潮汐變化分解為不同頻率，振幅和相位角的諧波（即分潮）的方法。 -
However we want to get the least absolute value of frequency deviation not the least square sum of it
但是實際需要的是使頻率偏差的絕對值最小而不是頻率偏差的平方和最小。 -
Based on vibration principle, the paper establishes dynamics analysis model of output shaft with elastic support, according to fourer series spread principle of periodic function, the dynamic response formula is derived by separating complex vibration force into sum of many simple harmonic excitation function of whole number times frequency relations. the result shows that response of both sides support is synchronous when load distribution non - uniform coefficient is 1
依據振動理論建立了具有彈性支撐的輸出軸的動力學分析模型，根據周期函數的傅里葉級數展開原理，將復雜的激振力分解成為多個頻率成整倍數關系的簡諧激勵函數，導出了動態響應表達式，結果表明，當載荷分配不均勻系數為1 . 0時的輸出軸兩端支撐同步。 -
They are the property of sum and difference beams, the errors of the elements and channels and different pulse repeating frequency ( prf )
這些因素包括和、差波束的特性、陣元和通道的誤差、不同的脈沖重復頻率（ prf ） 。 -
Generation of second - order sum frequency cumulative waves of sh plate modes in an isotropic plate
型板波的二階和頻積累波發生 -
Second, step into the electrical frequency and the empty affect empty sum frequency
二步進電機的空載牽入頻率和空載牽出頻率？ -
The radar based on this system can go beyond the limit of continuous silent frequency band. if there are some extent non - continuous silent frequency band in certain range, and its sum can fulfill the demand of the signal bandwidth, the radar will be work well
這種體制的雷達可以突破連續寂靜頻帶的限制，只要在一定范圍內存在一定數量的非連續寂靜窄頻帶，其總和滿足信號帶寬要求，就可以使雷達正常工作。 -
There are functions such as drawing the chart of amplitude - frequency and phase - frequency, calculating and displaying the highest peak value, the total sum of amplitude and the effective line - breadth of the signal in the program. so an effective technical means is supplied for the analysis of ultrasonic signal
軟體系統具有幅頻圖及相頻圖的繪制、最高峰值、諧波系數及有效譜寬度的計算及顯示等功能，從而為超聲信號的頻譜分析提供了極其有效的技術手段。 -
Now the common algorithm which is used to calculate the parameter of the compensation network is the method of least squares which can calculate the result to make the least square sum of frequency deviation least
目前國內外計算補償網路參數的常用演算法是最小二乘法，最小二乘法能夠求取使得使頻率偏差平方和最小的值。 -
Identity as frequency is the sum total of your physical, mental, emotional, and spiritual bodies broadcast as electronic pulsations
頻率特性的總和就是你的身體、心理、情緒和如電子振動靈性身體播送。 -
At present, ktp has been widely used in second harmonic generation ( shg ), sum ( difference ) - frequency mixing, optical parametric oscillators ( opo ) and optical parametric amplification ( opa )
目前， ktp已作為一種商業化的晶體廣泛應用於中小功率固體激光器的倍頻（ shg ） 、和（差）頻、光參量振蕩（ opo ）和放大（ opa ）等。 -
First part, it is two items of key technology of the computer music, the source and course development of midi and digital audio frequency technology and technological break - through, the characteristic of organizing computer music making of sum of making structure of having computer music is summarized
第一部分，為計算機音樂的兩項核心技術， midi和數字音頻技術的源流發展以及技術突破，還有計算機音樂的製作結構組織和計算機音樂製作的特性總結。 -
But they have the disadvantages such as poor complexity, poor security and insufficient amount of sequence numbers among the family of codes, the chaotic signals have noise ? ike, broadband frequency spectrum, they can be used as spreading codes, furthermore, chaos system is extremely sensitive on initial conditions so that the various initial conditions given by chaos system can provide with large sum of spreading sequences and this can meet the demand of cdma, this thesis sets out to study on using chaos system to generate spreading sequence s, there are two parts is this paper : firstly, we study the basic theory of spread ? pectrum communication and the characteristics of chaos so as to prove the applicability of chaos system to be used in spread ? pectrum ii communication system
現在使用的擴頻碼有m序列， gold碼和r - s碼等，這些擴頻碼具有良好的隨機性，但普遍存在著復雜度低、保密性差以及同一碼族序列數目少等缺點。混沌信號具有類似噪聲、寬帶連續頻譜的特徵，正符合擴頻通信中對擴頻碼的要求，而且混沌系統對初始值極其敏感，可以通過給混沌系統賦予不同的初始值得到為數眾多、不相關的擴頻序列，這正好滿足碼分多址的要求。本文對利用混沌系統應用於擴頻通信作了一些研究工作，主要包括兩部分：第一部分：探討了擴頻通信的基本理論和混沌的基本特性，說明將混沌系統應用於擴頻通信系統的可行性。 -
Depends. the sum of energy can be obtained by integral to all frequency
的能量分佈，對所有頻率積分就可得到
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