secondary frequency 中文意思是什麼
secondary frequency
解釋
次頻率-
A building of high, the breadth, long comparison is very important. house for combination in an ideal of big set, reruns hour then contain the best frequency to respond to the width. frequency response range in other words, the combination can broadcast tallest to can also fully develop to the lowest frequency, and the equilibrium degree is as well high, and halt a circumstance is very tiny. the first glint wave primary reflection mutual interference for with wave secondary reflection of many glints the degree is not to result in confusion. combination that fundermental the diapason wave harmonics is again perfect
大套組合在一間理想的房子里，重播時便有最佳的頻率響應寬度frequency response range 。換句話說，組合所能播放的最高至最低頻率也可以盡情發揮，平衡度亦高，駐波情況極微。第一反射音波primary reflection和多次反射音波secondary reflection的互相干擾情度不至造成混亂。 -
Additional trials on aeronautical telecommunication network ( atn ), surface movement guidance and control system ( smgcs ), electronic flight strips ( efs ), secondary surveillance radar mode s data link and very high frequency data link ( vdl ) are planned for this year
此外，有關航空通訊網路、地面活動引領管制系統、電子飛行紙條、 s模式的二次監察雷達數據鏈路和甚高頻數據鏈路的進一步試行運作，亦計劃在本年進行。 -
The algorithms estimate the doa of the broadband distributed source fron the secondary diagonal elements of the covariance matrices generated from every frequency domain of the received broadband signals, thus avoiding unwrapping of phases
該類演算法首先將陣列接收的寬帶信號變換到頻率域，然後對于每個頻率形成陣列接收信號協方差陣，最後由該協方差陣的次對角線元素估計寬帶分佈源的到達角，其主要特點是避免了相位展開。 -
Takes several energy saving measures for air conditioning system, nick a large capacity centrifugal chillers working with variable frequency nil capacity chillers, variable frequency and variable flow control on secondary pump water systems, cooling tower for four - pipe water system in winter, fan - coil unit for commercial peripheral zones aid all - air systems for interior zones, variable frequency control on supply and exhaust air fain, enthalpy control on fresh air cooling in winter and intermediate season
採用了多項空調節能措施：大冷量離心冷水機組搭配變頻小冷量機組，二次泵變頻變流量空調水系統，四管制風機盤管冬季用冷卻塔換冷供冷設計，商業外區風機盤管、內區全空氣空調系統，送風機、排風機變頻控制，過渡季、冬季利用室外新風通風降溫的焓值控制設計。 -
Leasing of secondary surveillance radar and very high frequency 7. communications facilities at xisha
租用在西沙設置的二次監察雷達及甚高頻通訊系統。 -
Experiments are mainly focused on initial growth of unsteady primary instability, high frequency secondary instabilities both in natural condition and artificial high frequency excitation
重點研究了基頻不穩定性擾動的初始增長過程，以及自然條件下與人工高頻激勵下的高頻二次不穩定性擾動發生與發展的一些特性。 -
Firstly, the experimental phase current and input power data obtained from load test are employed to estimate the parameters in ii rated condition. then, the phase current and input power data in locked rotor condition are used to track the variation of the parameters of the secondary coil with slip frequency. the classical method and the direct modification method are also used to estimate the parameters of the induction machine in comparison with this technique
首先利用了負載試驗的定子電流和輸入功率數據來識別額定工況下的電機參數，然後又使用了堵轉時的定子電流、輸入功率數據來識別電機二次繞組參數隨轉差頻率的變化，並與傳統參數測試方法和直接修正參數法進行了比較。 -
A high frequency secondary instability mode is detected, which rides on the primary instability wave in time domain and appears at the inflectional point of mean streamwise velocity profile
結果表明，高頻二次不穩定性在時域上表現為騎在基頻波的特定的相位區域。 -
The main and secondary axes are driven by ac frequency conversion motors, which can control the speed of each axis precisely
二、主軸及副軸均以ac變頻電機驅動，轉速可精確調節。 -
As an example, finite element analysis and optimization design are made to a voltage transformer of rating primary voltage 35kv, rating secondary voltage 100v, rating frequency 50hz
並以額定一次電壓35kv ，額定二次電壓100v ，額定頻率50hz的電壓互感器為例，進行了有限元分析計算和優化設計。 -
Service charges for use of the very high frequency communications facilities and secondary surveillance radar data to enhance safety and improve operational efficiency
租用甚高頻通訊設備及二次監察雷達數據的服務費用以加強飛行安全及運作效率 -
As a result of employing multilevel phase - shifted method with zig zag connection in transformer secondary, in the primary the current harmonics their orders are lower than 6m 1 are eliminated ( m is the number of power cell each phase ). in the inverter side because of using pulse shifting pwm control, the equivalent switch frequency of output is m times as high as one h - bridge, so the output voltage waveform of the inverter is near sine with less harmonics
對于整流電路，由於採用變壓器移相多重化整流，在理論上可以實現曲折變壓器一次繞組中低於6m 1次諧波電流相互抵消（ m為串聯單元個數） ；對于逆變電路，由於採用移相pwm控制方式，等效開關頻率提高m倍，因此輸出電壓接近正弦波，諧波含量較小。 -
Experiments with controlled excitation of primary and secondary instabilities have been performed to study the process leading to the final breakdown of laminar swept wing flow. two types of high frequency secondary instabilities are identified
在人工激勵激發基頻與定常擾動條件下，施加高頻人工激勵，研究附面層流流動在高頻二次不穩定性擾動的發生與增長過程。 -
The design process of the multi - beamforming is presented detailedly, which include the orthogonal demodulation and resample technology, the schema of phase shift beamforming, and the effect of the frequency shift and the phase disturbance. the secondary filter is designed to eliminate the influence of the close frequency
討論了頻偏和相位擾動對波束的影響；雙頻或三頻同時工作時，為消除相鄰頻率間的干擾，設計了二次濾波的特殊處理方法，模擬表明設計滿足要求。 -
According to the engineering practice, a multi - target based secondary correction control law is promoted and further verified by numerical simulations. the effects of frequency characteristic are researched which reduced by length, thickness and the placement. controllability optimization criteria of actuators ’ configuration are studied with a new controllability energy based criteria integrated, and optimization result is got
2 、壓電驅動器位置優化配置問題的研究，主要研究了壓電驅動器的長度、厚度和配置位置點對系統頻率特性的影響，在基於可控度配置準則方法上，組合一種新的配置準則，並通過模擬得到最優配置位置。 -
The study will include up to 180 eyes at 10 sites in the united states, canada, spain, and israel. the primary outcome is iop, and the secondary outcome is aderse eent frequency
研究將包括美國，加拿大，西班牙及以色列的10個地點的180隻眼睛。主要評價指標是眼內壓，其次是出現不良反應的頻率。
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