characteristic frequencies 中文意思是什麼

characteristic frequencies 解釋
特盞率
  • characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
  • frequencies : 頻數分佈分析
  1. The characteristic frequencies of the raman and infrared spectra of the fergusonite and aeschynite group minerals, monazites and the rare earth fluoro - carbonate minerals have been determined and assigned

    （ 3 ）變生態礦物拉曼光譜的強度很弱、譜線寬而彌散，而退火晶態礦物的拉曼譜峰強而尖銳。
  2. As is the case with everyday objects such as wineglasses or guitar strings, objects made from lower - mass materials have higher characteristic frequencies than otherwise identical objects made from higher - mass materials

    將原有的鎂或硼以它們的同位素取代，我們可以製造出由不同質量的原子所構成的硼化鎂。
  3. It shows that hard layers barely affect the ground motion and can thus be neglected in general. the soft layers, on the other hand, can influence the ground motion greatly, i. e., seismic response will decreases when the period less than 0. 1s and it increases when period greater than 0. 3s, but it will not change significantly for the long period over 3s. therefore the whole effect of the soft layers on earthquake ground motion in fact depends on the characteristic frequencies input

    研究結果表明，硬夾層的影響很小，一般情況下，可以不予以考慮；軟夾層有較顯著的影響，其影響主要表現為：對周期小於0 . 1s的高頻段反應減小，對周期大於0 . 3s的較長周期段反應增大，而對周期長達3s及以上周期段反應幾乎無影響，因此，軟夾層對場地地震反應影響的總體作用是增大還是減小反應，取決于計算基底輸入地震動的頻譜特性。
  4. Superconductivity - electronic characteristic measurements - surface resistance of superconductors at microwave frequencies

    超導性.電子特性測量.微波頻率下超導體的表面電阻
  5. The paper decomposes the visitor ' s flow sequence made of different frequencies into the low and high frequencies in the multi - resolution analysis according to the characteristic of visitor ' s flow sequence frequencies and then restores the trend components according to the reconstruct principle of wavelet coefficients, in order to deduce the visitor ' s flow trend

    摘要根據旅遊流量的頻率分佈特性，運用小波分析將不同頻率成分組成的時間序列分解成低頻和高頻成分，然後依據小波系數的重構原理還原時間序列的趨勢成分，判斷旅遊流量時間序列的趨勢變化。
  6. The cable sag and bending stiffness effects are studied on the higher natural frequencies of cable vibration. it is found that the differences of the higher adjacent frequencies go to the fundamental frequency of the taut string theory even though the cable sag or bending stiffness is included. this unique characteristic of cable vibration is used to determine the cable tension with the well - known taut string theory

    2 .考慮垂度和抗彎剛度對高階自振頻率的影響，探討了索相鄰頻率之差，發現索的高階頻差就是弦振動理論的基頻，利用這一特性，分析了頻差法測索力的精度和適用范圍。
  7. Natural characteristic analysis not only verifies whether the natural frequencies and mode shapes of the antenna are reasonable or not, but also is the base of the structural response analysis, fatigue resistivity computing and the other dynamics problems. the structure design of antenna is a complicated systems engineering, which is generally limited to multiple objects that influence each other, so we need to keep the balance among those objects by decision - making technology of multiple objects to ensure every target optimized

    固有特性的分析不僅能檢驗天線結構的固有頻率和振型是否合理，而且也是結構響應分析、動強度計算等其他動力學問題研究的基礎；天線的結構設計是一個復雜的系統工程，它通常受到多個目標的限制，而各目標往往是相互影響的，甚至是相互矛盾的，因此需要藉助多目標決策技術，平衡各目標，以保證空間天線最優的滿足各項設計指標。
  8. Synthesized signals with different pulse repetition frequencies ( prf ) and main vibration frequencies ( mvf ) were presented to the brown planthopper. the results showed that prf was a sensitive and important signal characteristic in mating choice. the prf and mvf sensitive ranges of male signals were 70 ~ 90hz, 200 ~ 1700hz separately, and of female signals were about 22hz, 100 ~ 300hz separately

    雄蟲敏感的prf范圍在22hz左右，雌蟲敏感的paf范圍為70 90hz ，這與實際的雌、雄蟲求偶鳴聲的pm變化范圍是一致的；雌、雄蟲能對mvf變化范圍較大的信號敏感，雄蟲敏感的mvf范圍為100 300hz ，與雌蟲求偶嗚聲的mvf變化范圍是一致的，而雌蟲敏感的mvf范圍為200 1700hz ，要比實際的雄蟲求偶鳴聲的mvf變化范圍大的多。
  9. The vibration characteristic of the rotor is calculated by the ansys software. the first ten natural frequencies and mode shapes are calculated. the utmost velocity of the rotor can be calculated

    利用ansys對電機轉軸進行了模態分析，求出了轉軸的前十階固有頻率和振型，得出了轉軸的極限轉速。
  10. At first, free vibration characteristic of the structure is analyzed, and it is discovered that the frequencies are denseness, moreover vertical vibration is dominant, the combination of ribbed truss and pre - stressed cables enhanced the structure ' s stiffness in some degree

    文中首先分析了該結構的自振特性，發現該結構頻譜密集，結構以豎向振動為主。
  11. With the speed increment, not only 1 / 2x and 2 / 3x frequency component appear in low frequency segment, but also 4 / 3x frequency component begin to appear in high frequency segment. the amplitude of fraction frequency is usually larger than that of multiple frequencies. the nonlinear characteristic of torsion for rubbing rotor is similar with that of flexural vibration completely

    研究結果證實了扭振特徵和非線性特性用於該類故障診斷的可行性：從發生碰摩起，扭振分頻和倍頻相伴出現，轉速較低時， 1 / 2x成分突出，隨著轉速升高，不但有1 / 3x及2 / 3x分量出現，而且出現了4 / 3x成分，分頻幅值大於工頻及倍頻；彎振和扭振的非線性運動特性完全相似，扭振有抑制轉子系統復雜運動的能力。
  12. Three characteristic features are found. first, for the same set of atom - light interaction parameters, the indices of refraction are large at three different frequencies where the absorption vanishes. these three frequencies are determined by the resonance transition frequencies between dressed states produced by the strong driving field

    我們發現了三個重要特徵：首先，在相同的原子和光相互作用參數條件下，同時存在三個無吸收折射率增強點，這三個點所處的頻率位置由驅動場產生的修飾態之間的共振躍遷決定。
  13. A static / dynamic characteristic test was done to obtain all dynamic parameters of the lathe, then the software ansys for fea was used to simulate and display various vibration modes and natural frequencies with the guide joint parameters taken into account

    首先利用靜、動態特性實驗得出機床的各項動態參數，然後用ansys有限元分析軟體模擬和顯示機床在考慮導軌結合面參數條件下的各階模態下的振型和固有頻率。
  14. Physical model methods are able to preserve not only the inherent physical stability, but also natural frequencies of the oscillating body. they are different from other sonud synthesis methods presenting characteristic of body with respect to time and frequency domain

    與其它合成技術不同的是：它是對聲音產生的物理機制的描述，而不是對聲音本身的描述，而其它方法則是對音頻本身的時頻特徵的描述。
  15. Based on the torque - speed characteristic curve of induction motors, analyses were done on changes in slip with an variation in frequency when an induction motor drives different kinds of loads, including those with constant torque, constant - maximum torque, variable torque ( except fans and pumps ) and constant power, as well as fans and pumps, the formulas to calculate the slip and the speed under different frequencies and loads were presented

    摘要以異步電動機機械特性曲線為基礎，分析了變頻調速異步電動機在拖動恆轉矩負載、恆最大轉矩負載、變轉矩（非風機和泵類）負載、恆功率負載以及風機和泵類負載時，轉差率隨頻率變化的規律。
  16. The result shows that a new kind of flow will be produced instead of the microjet when frequencies exceed a critical value, suppose the characteristic velocity of the micro - actuator remains constant

    結果顯示：在作動器出口最大速度一定的情況下，當頻率超過一臨界值后將無法產生微射流，而產生另外一種形態的流動。
  17. The characteristic of excitation of the acoustic field is investigated for sources with various frequencies. the effects of an isotropic medium, inclined formation of different azimuth, horizontal or vertical fracture and its width or density on the propagation of the acoustic field are investigated. the fluid in borehole is also investigated

    研究了聲源在不同頻率下的聲場激發特性，考察了井外介質為均勻介質、存在不同傾角的地層界面、存在水平和垂直裂縫以及裂縫寬度和密度等對井內外聲場傳播的影響以及井眼流體對井孔聲場的影響。
  18. Superconductivity - part 7 : electronic characteristic measurements ; surface resistance of superconductors at microwave frequencies

    超導性.第7部分:電特性測量.微波頻率下超導體的表面電阻
  19. Superconductivity - part 7 : electoronic characteristic measurements - surface resistance of superconductors at microwave frequencies

    超導性.第7部分:電特性測量.微波頻率下超導體的表面電阻
  20. Superconductivity - part 7 : electronic characteristic measurements - surface resistance of superconductors at microwave frequencies

    超導性.第7部分:電子特性的測量.微波頻率下超導體的表面電阻
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