frequency instability 中文意思是什麼

frequency instability 解釋
頻率不穩定度
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • instability : n. 動搖性，不穩定性；不堅決，反復無常，三心二意。 the instability of human affairs 人事滄桑。
  1. The first type is the instability excited near the cyclotron frequency of stationary species.

    第一種類型，是在靜態粒子迴旋頻率附近散發的不穩定性。
  2. Low and intermediate frequency instability models are taken up first.

    首先處理低頻和中頻不穩定性的模型。
  3. Intermediate frequency instability has had the most uneven history.

    中頻不穩定性的研究經歷了極為曲折的道路。
  4. Low or intermediate frequency combustion instability generally involves the interaction of several components of an engine system.

    低頻或中頻燃燒不穩定性通常包含發動機系統中幾個組件的相互作用。
  5. Torsional interaction exists between hvdc converters and turbine - generators, and negative electrical damping provided by hvdc may cause subsynchronous oscillation ( sso ) that can lead to turbine - generator shaft failure and electrical instability at oscillation frequencies lower than the fundamental system frequency

    高壓直流輸電（ high - voltage - direct - current - - - - hvdc ）系統與臨近同步發電機組之間存在著扭振相互作用， hvdc的電氣負阻尼作用有可能引起機組在次同步頻率范圍的扭轉振蕩。
  6. Around 40 ; the neutral curve obtained by the growth rates of the temperature fluctuation has a ringlike curve separated from the main branch of nachtsheim s calculation by velocity fluctuation at the lower grashof number side ; and its phase velocity is close to the maximum mean velocity where the critical layer of the eigenmode locates. the thermal fluctuation decays rapidly as the nondimensional frequency above 0. 4, so that it means that the coupling effect between instability wave generated by buoyancy fluctuation and velocity waves by invicid instability seems weak enough for their critical layers in the range of the nondimensional frequency

    詳細研究了自然對流邊界層中最早失穩的浮力振型的功率譜波長波速與臨界層位置等基本特徵和它為主導其他振型尚未失穩時按線性理論得到的3種相互獨立振型的振幅分佈。系統地測量了它所對應的溫度和速度漲落的振幅增長規律和中性曲線，實驗結果表明，溫度漲落的中性曲線在低格拉斯霍夫grashof數
  7. Article has introduced partition and the definition of oscillator frequency stability, and analyzed emphatically to cause the vibration factor with instability frequency, this paper elaborated the major measure and steady method that how to raise frequency stability

    摘要介紹了振蕩器頻率穩定度的定義與劃分，著重分析了導致振蕩頻率不穩定的因素，詳細地闡述了提高頻率穩定度的主要措施和穩定方法。
  8. The shearing layer is carried by the jet and the eddy is formed because of the instability and selective amplification of shearing layer which will propagate to the downstream. as the eddy impacts the impinging wall, a wave of pressure disturbance with certain frequency is induced. this wave then propagates to the upstream with high speed, and results in the overlap and amplification of the waves when the frequencies of them are close with each other

    當前噴嘴流束中的不穩定擾動波在穿過腔內的剪切層時，剪切層對其有選擇放大作用，形成渦環結構，剪切流動中渦環與碰撞壁撞擊，在碰撞區域產生壓力擾動波並向上游反射，在上游剪切層分離處誘發新的擾動的產生，當新擾動與原擾動匹配時，射流上游就被不斷地受到周期性激勵，腔內就產生流體自激振蕩並在後噴嘴出口形成脈沖射流。
  9. Concerning the problem of the frequency instability, slight but not negligible, in electric power system, this paper discusses the resultant error in measurement in detail and develops an error - correction interpolated algorithm in frequency domain. taking advantage of the high calculating speed of pc, the measurement error in frequency, amplitude, and phase are well eliminated

    本文針對電網頻率輕微但不可忽視的不穩定造成的測量誤差問題進行了詳細的討論，形成了一套在頻域實現誤差校正的方法?插值演算法，並利用pc機高速的數據處理能力軟體校正了各次諧波的頻率、幅值及相位。
  10. The growth rate of inflectional instability and viscous instability also saturate similarly to the primary and nonlinearly generated disturbances. the main effect of inflectional instability mode in the final breakdown seems to interact with the disturbances having developed and thus widens the frequency spectrum to turbulent state

    屬于拐點不穩定性的高頻二次不穩定模態對最後轉捩的影響主要體現在與其它擾動的相互作用，並導致出現紊流狀態寬帶頻譜。
  11. 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。
  12. There is limited evidence that the mechanism for high frequency combustion instability lies in the vaporization and combustion processes.

    有限的證據表明，高頻燃燒不穩定性機理取決于汽化和燃燒過程。
  13. 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。
  14. The phase noise in microwave receiver and the measured parameter of source frequency instability are described in this paper, and the technology of frequency - synthesizing and theory of phase locked loop ( pll ) are also briefly introduced

    摘要闡述了微波接收機中的相位噪聲概念及本振源頻率不穩定度的實際測量參數，並簡要介紹了頻率合成技術和鎖相環路工作原理。
  15. As the wing - pivot frequency decreases, it couples with the vehicle short - period mode resulting in dynamic instability. a similar instability sometimes occurs when the pivot mode couples with the fuselage - bending mode

    隨其頻率降低，它與飛行器短周期模態耦合時會導致飛行器動不穩定，而與機身彎曲模態耦合時同樣會導致模型動不穩定性。
  16. In the second experiment, the topography stirred waves in a to - and - fro current is simulated, in which the rough relationship of the stirred waves and the topography is made out, a phenomenon of high frequency instability and breaking of surface on curtain condition is detected and analyzed

    另一項實驗是借用地形的往復運動產生的波動，模擬往復流中由地形激發的波動現象，找到了往復流地形波與往復頻率和地形高度之間的初步關系，發現了由地形引起的高頻不穩定和破碎現象並給出了初步的解釋。
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