cut off frequency 中文意思是什麼

cut off frequency 解釋
截止頻率
  • cut : vt （cut; cutting）1 切，割，截，斬，砍（樹），剪（發等）；切斷，割下；採伐；剪下；修剪，刈。 I h...
  • off : adv 1 〈運動〉向那邊，隔開。 be off 走，去，逃。 I must be off 我得走了。 Where are you off to 你...
  • 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。
  1. Win2000 bed lift is of personalized design, ultra - stable operation, to offer quietness and comfortableness to the greatest extent to patients with warm colors. it is provided with variable voltage variable frequency device, to produce the best operating curve in accordance with the physiological requirements of human body, to show make the safe, comfort, stable and excellent perfomance in the whole process during the operation of the lift from start, acceleration, deceleration to stop. optional cut - off emergency leveling device may be equiooed at the demand of user to ensure that the passengers inside the lift can be rescued in case of power cut - off accident

    Win2000系列病床電梯以人性化的設計，超平穩的運行，給予病患者最大程度的安靜舒適增添溫馨的色彩。採用先進vvvf調頻調壓調速裝置，按人體生理要求由電梯優化產生最佳的運行曲線，使電梯的起動加速減速停止過程處處體現安全舒適平穩的卓越性能。根據用戶要求可選裝停電應急平穩裝置，確保以外停電時，被困電梯內的乘客能及時獲得解困。
  2. The influence of msfvw bandwidth on the diffraction efficiency is also considered. for the nonuniform bias magnetic field of u - type parabola profile, when the msw frequency is less than the cut - off frequency at the edge of mo film, the effective mo interaction length reduces. the edge cut - off frequency is determined by the maximum of the nonuniform field

    對于拋物型分佈（開口向上）的偏置磁場，當激發靜磁波的rf頻率小於邊緣截止頻率時，磁光作用的有效長度減小（與靜磁波頻率有關） ;邊緣截止頻率由不均勻磁場的最大值決定，靜磁波的下限截止頻率由不均勻場的最小值確定。
  3. Fluorescence power transfer function, three - dimensional point spread function ( 3d - psf ) and three - dimensional optical transfer function ( sd - otf ) for the various fluorescent wavelength of the two kinds of fluorescence confocal scanning microscopy are calculated in this paper by using fourier imaging theory. the results show that the fluorescent wavelength has influence on imaging property of confocal microscopy such as spatial cut - off frequency, resolution and 3d - otf. there is a different missing - cone in the 3 - d space of otf when the ratio of excitation wavelength to fluorescent wavelength decreases

    本文在sheppard和gumin等人的理論基礎上，利用fourier光學成像理論，討論了不同熒光波長對單光子和雙光子共焦顯微鏡成像特性的影響，導出了單光子和雙光子共焦顯微鏡的熒光功率傳輸函數、三維脈沖響應函數和三維光學傳遞函數，得到了它們在不同激發波長與熒光波長比值時具體的表達式，並且通過數值計算，得到了它們的曲線圖，結果表明：隨著激發波長與熒光波長比值的增加，焦斑的橫向分佈和縱向分佈變窄，橫向解析度和縱向解析度提高，系統的成像效果變好，當激發波長與熒光波長的比值下降到一定程度時，可以看到不同程度的失錐現象。
  4. The emphases of our research works are as follows : under ultra - low temperature ( about 0. 236k ) conditions, how the frequency and power of the saw and the source drain voltage influence the acoustic current ; and the relationship between the source drain current and the split - gate voltage ; and how to find the cut off voltage of the quasi - 1d electron channel ; and also the frequency character of the idt in the saw parts

    研究的重點為，在甚低溫（ 0 . 236k ）下，通過實驗研究表面聲波的頻率和功率，源漏偏壓等因素對聲電電流的影響;研究準一維電子通道中不同源漏電流與分裂門負偏壓的關系，以找到分裂門的鉗斷點電壓;以及研究聲表面器件叉指換能器的頻率特性等。
  5. From simulation we can see that the lower of the digital low pass filter ' s cut off frequency, the smaller of the instruction current ' s aberration. experience from foreign country show that active power filter has good application foreground. so its research and application is very important in the future

    本文還重點討論了數字低通濾波器的設計及其截至頻率對指令電流精度的影響，通過模擬得出結論：數字低通濾波器的截止頻率越低，基波有功電流的畸變就越小，從而基波有功電流減去負載電流求得的指令電流的誤差也越小。
  6. It was the result from that the width of spectrum of the input em pulse packet was too wide, the spectrum included rather strong frequencies being above the cut - off frequency which have not been decayed

    分析認為，這是由於輸入電磁波包脈沖的頻譜太寬，存在較強的高於截止頻率的頻率，這部分頻率未被衰減而直接傳輸所致。
  7. The shunt active power filter which uses the i p ? iqmethod and the hysteresis - based current control strategy has been simulated, and analyze the inductor and the cut - off frequency which affect the performance of shunt active power filters

    Iq諧波電流檢測和電流滯環跟蹤控制技術的並聯型有源電力濾波器進行了模擬研究，重點分析了影響有源電力濾波器補償效果的濾波電感和采樣電路截止頻率。
  8. When the frequency is below than the cut - off frequency of the waveguide, the field intensity decays exponentially with distance along the waveguide and the wave is called evanescent wave

    當頻率低於波導的截止頻率時，電磁波在波導中與距離成指數規律衰減，是一種消失波。
  9. The results show that : ( a ) the influence of the groove shape on the low cut - off frequency is great at certain groove depth ; the high cut - off frequency is gradually lowered from triangle profile, cosine profile to swallow - tailed profile

    結論為: （ 1 ）槽深較大情況下，槽形狀對截至頻率影響較大，槽形狀從三角形變化到燕尾形，截至頻率依次降低。
  10. 2. the real - time processing technique of strong ground motion data is studied in this paper. based on the research of kanamori etc., the relation between the design parameters of recursive filter and its corresponding low frequency cut - off frequency is obtained and quantitative phase adjustment is analyzed

    本文在kanamori等人研究工作的基礎上，發展了一套強震觀測數據的實時處理技術，分析了遞歸濾波器設計參數q與所對應的低頻截止頻率f _ c以及相位校正的定量關系。
  11. In order to solve this problem, this research adopts the electrical self - regulation circuit in series, on the basis of the unchanged of transfer function of electromagnetism rate transducer, extend frequency bandwidth of the transducer, improving its capability. after the self - regulation, the transducer has high passing feature and inferior lower lever cut - off frequency ( below 1 hz )

    為了解決普通電磁式速度傳感器不能檢測超低頻振動信號的問題，本研究採用了一種串聯式電子補償電路，在保持電磁式速度傳感器的傳遞函數性質（高通）不變的前提下，拓展了傳感器的頻寬，改善了傳感器的性能。
  12. The results show that : ( a ) the influence of the groove shape on the high cut - off frequency is great at certain groove depth ; the high cut - off frequency is gradually lowered from triangle profile, cosine profile to swallow - tailed profile

    結論為：中文摘要（ 1 ）適當槽深情況下，槽形狀對高截止頻率影響較大；槽形狀從三角形變化到餘弦形直到燕尾形，高截止頻率依次降低。
  13. When the pulse width of input gaussian wave packet was reduced and the length of forbidden region retained, the result displayed the output signal distorted seriously and its spectrum changed very hard. a frequency above the cut - off frequency became the main frequency and the group velocity was below than c

    在保持截止區長度不變，而減小輸入高斯波包的脈沖寬度時，模擬顯示輸出波形嚴重失真，而且，頻譜也發生很大的變化，主頻已變為一高於截止頻率的頻率，群速度小於光速c 。
  14. The tm01 mode of the coaxial bwo has no cut - off frequency, which is similar to the tem mode in the conventional coaxial waveguide

    這是因為同軸慢波結構的tm01模式有類似於tem的性質，沒有截止頻率。
  15. But it was only about 0. 3 when the cut off frequency of target signals increased to 0. 4 hz

    相干函數也表明在小於0 . 1赫茲時有較高的值。
  16. Calculating and analyzing shows that the smaller the radius of the gaussian beam, the smaller the cut - off spatial frequency in both transverse and longitudinal directions, the lower the imaging quality

    計算與分析表明，光束的束腰半徑越小，三維成像時橫向和軸向的截尾空間頻率都減小，成像品質下降，解析度降低。
  17. This is because the bpf is a two - pole filter ; at its cut - off frequency ( when output is 50 per cent ) the output power of a true lpf of the same cut - off would be in fact 70. 7 per cent

    這是因為帶通濾波器是一個兩極濾波器；在其截止頻率下（輸出為50 % ） ，真正的具有相同截止頻率的低通慮波器的輸出功率事實上為70 . 7 % 。
  18. Four white noises which have different cut off frequency were used as random control signal ( target signal ) in the simulation experiment. the results indicated that the correlation between the measured velocities and target signals decreased when the cut off frequency of the target signal increased. the correlation between the measured velocities and the target signals with cut off frequency of 0. 1 hz was 0. 85 ~ 0. 9

    在風洞中利用截斷頻率分別是0 . 1赫茲、 0 . 15赫茲、 0 . 2赫茲和0 . 4赫茲的水平譜原始信號進行模擬實驗，結果表明隨著原始信號的截斷頻率增大，實驗風速信號與原始信號的相關系數逐漸變小，當原始信號截斷頻率為0 . 1赫茲時，相關系數在0 . 85 0 . 9之間，而當截斷頻率為0 . 4赫茲時相關系數僅為0 . 3左右。
  19. The simulation results prove that active power filter can not only eliminate harmonic current effectively, but also have well dynamic compensation characteristics. designing of digital low pass filter and the effect of its cut off frequency on precision of instruction current are discussed in this paper

    模擬結果證明，有源電力濾波器對於三相平衡負載或三相不平衡負載的諧波電流都起到了很好的補償作用；同時當負載電流突變時，有源電力濾波器具有良好的動態補償特性。
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