低周波的 的英文怎麼說

中文拼音 [dīzhōubōde]
低周波的 英文
low-frequency
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 的 : 4次方是 The fourth power of 2 is direction
  1. Characters and main use : camouflage printed, light and flexible, good low temperature resistance, air tightness and heat welt. suitable for making air bed, air cushion and water bag

    特點及主要用途：迷彩印花，織物結構比較輕、薄，具有優異的耐低溫性、氣密性、高周波焊接性。適合做氣床、氣墊等充氣產品及儲水袋類產品。
  2. Characters and main use : light weighted, flexible, good low temperature resistance, air tightness and heat welt. suitable for making lifejacket, airbag, air bed, air cushion and water bag

    特點及主要用途：輕、薄，富有彈性，具有優異的耐低溫性、氣密性、高周波焊接性。適合做救生衣，氣墊，氣床等充氣產品及儲水袋類產品。
  3. The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation

    二、在高頻變壓器原邊，當開關管接收控制信號脈沖列（經調制的spwm波列）導通時，在低頻調制信號的正半周或負半周內，施加在變壓器繞組上的是同一方向的電壓，變壓器磁芯中的磁通可能將級進地逐漸增加，導致磁芯飽和，造成磁偏或單向磁化，導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。
  4. But, deep dreamless sleep would take you down to the lowest frequency, typically 2 to 3 cycles a second

    但是無夢的深層睡眠將使你的腦電波頻率降到最低，通常情況下為每秒2 3周。
  5. In this paper, a method assessing harmonic impedance by synchronously layered distortion waves is proposed, which is based on the " fluctuations method " - a simple and effective means. however the method is based on the fourier transform, which can just precisely analyze the signals whose cycle is integer times as broad as that of fundamental wave. with sampling windows widening, the variations of distorted signals in a fundamental period are weakened

    本文是以一種被廣泛採用的非干預式諧波阻抗估計方法? ? 「波動量」法，的基礎上，針對現有方法以直接的fourier變換為分析工具，只能對基波周期的整數倍窗口采樣信號進行分析，畸變信號在一個基波周期內的變化隨采樣窗口增大而被弱化，並且，諧波次數越高，解析度就越低，大大限制了諧波阻抗估計的準確性的提高。
  6. Fuzhon jingmei biotechnology dvelopany limited since its establishent has become the main instrument of the high potential for r & d, production, marketing, iresearch and developent of high - potential therapeneutic apparatus for one set ; including electrostatic field, the negative electric field, the low - frequency field, high frequency anions, such as far - infrared

    福州靜美生物技術開發有限公司自成立以來主要自立於高電位健康器的研發、生產及銷售，我公司研發的高電位健康器集多種功能為一體；包括有靜電場、負電場、低頻場、高周波、負離子、遠紅外等。
  7. Before us, over the tree - tops, we beheld the cape of the woods fringed with surf ; behind, we not only looked down upon the anchorage and skeleton island, but saw - clear across the spit and the eastern lowlands - a great field of open sea upon the east

    在我們的前方，越過樹梢可以望見森林岬角四周波浪翻騰在我們後方，不僅看得見錨地和骷髏島，還可以看到沙尖嘴和東岸低地外大片開闊的海面。
  8. Proved with the mixing rate using parameters tw and r ^ it showed that large amplitude and high frequency could greatly enhance the mixing rate. but at large st, the rate of attenuation appears to be in periodic fluctuation at the range of low frequency, so there must be some best partnership of amplitude and frequency

    用參數t _ w 、 r _ （ 15 ）表徵的混合效率表明：總的來說大振幅、高頻率有利於混合，但在st較大的低頻率區中衰減速度會有周期波動的特性，存在最佳的頻率振幅配對。
  9. It is well known that the wavelet liner approximation ( i. e, truncating the high frequencies ) can be approximate smooth singals very efficiently. however, for example, piecewise continous signals with large jump in signal value or in its derivatives, standard wavelet linear approximation techniques cannot achieve similar results for signals which are not smooth. to overcome these problems within the standard wavelet transform framework, the paper proposed the double adaptive wavelet transforms

    眾所周知，小波的線性近似（只用低頻系數而不採用高頻系數進行重構的方法稱為線性近似）能非常有效的近似初始的光滑信號。然而對于非光滑信號，例如具有跳變點的分段連續信號，標準小波的線性近似就不能獲得如光滑函數那樣好的結果。
  10. Generally speaking, the high group velocity and low attenuation factor and high qr in the same area, but relatively low group velocity and high attenuation factor and low qr in the same area in china is the general distribution

    在不同周期，面波衰減系數或品質因子在整個中國大陸區域分佈是不均勻的；總體表現為高群速度分佈的區域呈現高叢和低衰減系數、低群速度分佈的區域呈現低叢和高衰減系數分佈的特點。
  11. The latest potter movie led a lineup that helped reverse the hollywood box - office slump, with the top 12 films raking in 1 million, up 19 percent from the same weekend last year when " national treasure " was no. 1 with. 1 million

    最新一集哈里波特電影的演員們再次挽救了低靡的好萊塢票房，上周好萊塢排名前12位的電影票房收入達到1 . 71億美元，比去年同期上升了19 % 。去年這個時候，國家寶藏以3510萬美元位居票房排行榜首位。
  12. The change of elastic constant of steel 20 in low - cycle fatigue procedure measured by ultrasonic

    用超聲波法測試20鋼低周疲勞過程中彈性常數的變化
  13. When the frequency approaches zero, the factor approaches zero correspondingly ; 2 ) the amplitude of interaction factors changes with the incident angle of rayleigh waves and reaches maximum when is zero. moreover, with the increase of, the wave period shortens apparently ; ( 3 ) the amplitude of interaction factors decreases as the pile spacing increases and approaches to zero when the pile spacing is 15 ; 4 ) the amplitudes of interaction factors increase clearly with the increasing stiffness ratio of pile to soil ; 5 ) the lat eral seismic response of fixed - head pile groups is much smaller than that of free - head pile groups. moreover, the pile - group effects induced by rayleigh waves can be neglected ; 6 ) the lateral seismic response of piles at different location differs from each other

    得到了以下結論： 1 ）樁的相互作用因子隨頻率呈周期性變化，在振動頻率比較低的情況下，樁的橫向相互作用因子也較低，當頻率趨近於零時，相互作用因子也趨近於零； 2 ）樁的相互作用因子的幅值隨瑞利波入射角度的變化而變化，在= 0情況下幅值最大，且隨入射角度的增加，波動的周期明顯縮短； 3 ）樁的相互作用因子的幅值隨著樁與樁間距的增加而減小，至s d = 15時，樁的相互作用因子基本趨近於0 ； 4 ）在頻率比較低時，相互作用因子幅值隨樁土相對剛度比的增加而顯著增加； 5 ）樁頂固接可以有效地降低群樁的橫向地震響應幅值，由瑞利波產生的群樁效應可以忽略不計； 6 ）群樁中不同樁位的樁的橫向地震響應是不同的，每根樁所在的樁位對其橫向地震響應有很大的影響；刀樁數的增加並不能減小樁的橫向動力響應。
  14. The special electronic circuit on the machine works automatically, cuts high frequency immediately to suppress arcs and minimizes damage to electrodes and materials, when sparks occurs, and alarm lamp also works simultaneously

    當火花產生時，本機裝有特殊電子迴路能自動切斷高周波壓制火花，使對電極和物料的損害降到最低，同時警告燈亦發亮示警。
  15. This system is realized by cpld which can get rid of the disadvantages in one - time design including property liable to jamming, long sampling period, and poor working stability. its sampling period is up to 500ns at least and output delay is only 19. 5ns. a stable period of pulse coming out of quadruple - frequency differential circle belongs to it

    完成了用vhdl硬體描述語言對全數字轉速位置測量子系統的設計，並用max ? plusii軟體進行了編譯和波形模擬，在cpld （ max7000 ）得到實現，該系統克服以往設計中存在的易受干擾、工作穩定性差、采樣周期太長等的缺點，輸出延時僅為19 . 5ns ，采樣最低周期可達到500ns ，且四倍頻微分電路獲得的脈沖周期穩定。
  16. In this paper, the low - cycle fatigue behavior of ni - base superalloy gh4145 / sq at 538 ? temperature, its microcosmic mechanisms and cyclic hysteresis energy are investigated. the influence of fatigue parameter on prediction of fatigue life is also discussed

    本文主要研究了鎳基合金gh4145 / sq在538溫度下的低周疲勞行為、疲勞特性參數變化特徵及其微觀機制，初步探討了低周疲勞特性參數波動對壽命預測結果的影響。
  17. The results show that the method using bias function and time - domain clipping to search pitch period can overcome shortcomings of the traditional, reduce false decision and raise the estimation precision

    研究結果表明：採用所提出的中心偏離函數和時域削波方法相結合來搜索基音周期，能夠有效地克服傳統方法的不足，降低誤判率，提高基音周期的估計精度。
  18. Wavelet decomposition : db4 wavelet decomposition and energy norm l1 was employed to extract feature of zr - 4 alloy images. with the selected wavelet db4, features at different frequency channels of life span were gotten. then an energy change at the direction of fracture extension was studied to find the relationship between the feature and life - span. fractal algorithm : feature of image at different channel was extract after wavelet transform

    基於小波分解的斷口圖像的分析，首先提取鋯- 4合金低周疲勞斷口紋理圖像的特徵，實驗確定了db4小波分解和l1能量的計算方法，求得不同壽命的斷口圖像在各個頻率通道的特徵值，斷口圖像的變化反映在特徵值的變化，這為圖像的壽命分析提供了一種有效的手段。
  19. Its known that sharks are attracted to low - frequency sounds

    我們知道鯊魚被低周波的聲音所吸引。
  20. The scanner emits a low - frequency radio signal, activating the microchip

    掃描儀會發出一些低周波的無線電信號，來激活微晶元。
分享友人
分享到 Line

分享到臉書