低周波 的英文怎麼說

中文拼音 [dīzhōubō]
低周波 英文
main 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...
  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. Low frequency therapeutic device ne3903ca

    低周波治療器ne3903ca
  8. Low frequency therapeutic device ne3801ca

    低周波治療器ne3801ca
  9. Low frequency therapeutic device

    低周波治療器
  10. 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。
  11. 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
  12. 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。
  13. 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。
  14. 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。
  15. Low frequency electric induction furance

    低周波感應電爐
  16. Abstract : the uni - polarity phase - shifted controlled voltage mode ac / ac converters with high frequency ac link based on forward converters are firstly proposed and deeply investigated. this kind of converters is constituted of input cycloconveter, high frequency transformer, output cycloconverter, input and output filters. it includes full bridge - full wave mode and full bridge - full bridge mode topologies, the former is suit for low output voltage field and the later is suit for high output voltage field

    這類變換器由輸入周波變換器、高頻變壓器、輸出周波變換器、以及輸入、輸出濾波器構成，包括全橋全波式、全橋橋式兩種電路，前者適用於低壓輸出變換場合，後者適用於高壓輸出變換場合。
  17. Line frequency induction furnace

    低周波感應電爐
  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