超低頻率 的英文怎麼說

中文拼音 [chāobīn]
超低頻率 英文
ulf
  • : Ⅰ動詞1 (越過; 高出) exceed; surpass; overtake 2 (在某個范圍以外; 不受限制) transcend; go beyo...
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  • : 率名詞(比值) rate; ratio; proportion
  • 超低 : super low frequency
  • 頻率 : frequency; rate
  1. Magnetron management of target capacity and stabilization of an anodi current with the help of the built - in electromagnet, an opportunity of a parallel feed several magnetrons from one rectifier, a low level of the shf radiation from a cathodic leg is characterized effective

    該磁控管可有效控制輸出功,內建電磁石使提高了它的陽極穩定性,一個整流器可同時供幾個磁控管,具有的陰極輻射。
  2. Undershoot undershoot refers to the amount by which voltage or frequency drops below the nominal value as the voltage regulator or governor responds to changes in load

    調下調指電壓調整器或控制器在應對負荷變化時,電壓或於額定的量。
  3. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功單向流動角度出發,提出了一種lcc諧振型恆移相單相高鏈逆變電路拓撲,在調制系數0 . 1 m 0 . 5情況下,控制移相角按正弦規律變化,使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號,經過整流、濾波、逆變,從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載,移相全橋具有前橋臂零電壓開通,滯后橋臂或者零電壓開通( _ 0 )或者零電流關斷( _ 0 )的軟開關特性,而逆變器的各個開關均實現零電壓條件下的開通與關斷。
  4. Undermentioned frequency is each age paragraph optimal number, exceed or under this data person all belong to owe beautiful : 20 years old of minutely optimal ventilatory frequency ( breathe out whiff is ) it is 18 20 times ; 30 years old are 15 18 times ; 40 years old are 10 15 times ; 50 years old are 8 10 times ; 60 years old are 5 10 times

    下述為各年齡段的最佳數,過或於該數據者均屬欠佳: 20歲每分鐘最佳呼吸(一呼一吸為一次)為18 20次; 30歲為15 18次; 40歲為10 15次; 50歲為8 10次; 60歲為5 10次。
  5. The numerical results indicate that the deformation within the solid inner core is very small. however, in the fluid outer core, the changes of the displacement with relatively low spherical harmonic degree ( n < 10 ) is very complicated via the radius, due to the resonance near the eigenfrequenies of the core long - period oscillations. while the spherical harmonic degree of the loading is larger than 10, the deformation and the gravitational perturbation in the core are very small, and the earth ' s deformation response is dominantly represented as the radial displacement in the elastic mantle

    研究了地球在日月引潮力和表面負荷作用下的形變特徵,數值計算結果表明,在固體內核中的形變很小,由於在長周期核模本徵附近的共振,液核中階( n 10 )位移隨半徑的變化非常復雜,當負荷階數過10時,地核中的形變和擾動位都很小,地球的響應主要表現為彈性地幔中的徑向位移,且隨深度增加急劇減弱,地表負荷love數與信號的依賴關系很弱,給出了體潮love數計算的一種有效的近似處理方案。
  6. By studying on different operation mode and different interval flood of longyangxia reservoir, as well as the flood propagation time, pre - alarm scheme is established, which can alarm in order to lower construction losses when flood is in excess of standard

    通過研究龍羊峽水庫的不同運行方式和不同的區間洪水,以及水量傳播時間的研究,得出預警方案,當發生標準洪水時,提前報警使施工損失降到最小。
  7. According to the high dispersedness and low precision of measurements when using the traditional time difference method in small diameter and low flow rates conditon, this paper brings forward a new method based on high - speed data acquisition technique. the time difference comes out accurately with high resolving ability of time by using the method and the signal processing algorithms. the developed ultrasonic detection system is composed of two ultrasonic detectors, a transmitting and receiving ultrasonic unit, a high - speed data acquisition unit and a computer

    本文針對傳統的時差法在小管徑、流速測量時,具有測時結果分散性大、測量精度受計數的影響大等不足,創造性地把高速數據採集技術應用在聲波流量、壓力測量上,用信號處理演算法求時差,使時差成為一個統計量,有效地克服了聲波傳統時差法測量精度差、不能測量小管徑、流速流體流量的缺點,提高了時差測量的解析度和精度。
  8. The innovation in this paper is list below ( 1 ) use rectangle - shape pipeline so that the inducing electromotive force could be enhanced ; ( 2 ) use alternating current whose frequency is adjustable to induce the magnetic ; ( 3 ) make the flowmeter intelligent by use the microprocessor ; ( 4 ) finish designing the ls flowmeter with utra - low power consumption

    本文的創新之處在於採用矩形測量導管大大增加微流量條件下的感應電動勢;採用輸出可調的正弦波電流作為勵磁電流達到消除50hz干擾和減少正交干擾的目的;利用單片機等高端現代電子產品實現了電磁流量計的高度智能化及設計出真正的功耗的、可用干電池長期供電的ls旋轉流量計。
  9. In recent years, the span of modern cable - stayed bridge has become longer ( the longest span of cable - stayed bridge has been over 1000 meters in the world, and it will develop longer in the future ), generally, with the span gets more longer, the frequency of the bridge is more lower

    近年來,隨著現代斜拉橋跨度的不斷增大(目前最大跨度已經過1000米,並向更大跨度發展) ,橋梁結構的越來越,易受環境激勵發生各種振動,從而誘發斜拉索的振動。
  10. Research on cmos implementation of wlan transceiver rf front - end is done in this thesis. the transceiver uses the most used super - heterodyne architecture, its rf front - end consists of low noise amplifier, down - converter, up - converter, preamplifier, lo buffer and pll frequency synthesizer

    本論文研究無線局域網收發機射前端的cmos實現,該收發機採用外差式的拓撲結構,其射前端主要由噪聲放大器、下變器、上變器、末前級、本地振蕩信號緩沖器和鎖相環型合成器等模塊組成。
  11. The results show that wavelength locates in gain zone of semiconductor optical amplifier, and have higher peak power and proper time delay between the two pulses for the second order super gauss control pulse in semiconductor optical amplifier. a high quality amplified signal pulse can be achieved. the chirp can be reduced notability by using cascading soa in cross gain modulation based on soa, and the distance and the peak power of conversion optical pulse can be increased notability, and we can let down the demand for wavelength based on xgm in soa and enhance the flexibility of wavelength conversion

    我們應用二階高斯光脈沖與高斯信號脈沖同時注入soa和應用soa與非線性光學環鏡( nolm )相結合的方案來對信號脈沖進行壓縮整形,模擬顯示,在調節系統合適參數的情況下,波長位於soa增益區的二階高斯控制光脈沖在具有較高的峰值功和適當時延下輸入soa時,最後可以得到放大的高質量簡訊號光脈沖;在基於soa的交叉增益調制( xgm )全光波長轉換中,採用級聯的soa能有效地使反轉光脈沖的啁啾得到有效降,波長向下轉換的距離和反轉光的峰值能量都得到明顯提高,降了利用交叉增益調制( xgm )波長轉換中對波長精度的要求,從而提高了波長轉換的靈和性。
  12. In this paper, difficulties such as the design of hts microwave passive component, the lithography technology, encapsulation and testing at low temperature etc. are solved. a hts delayline with center frequency at 4ghz, bandwidth of 4ghz is manufactured and tested. it ’ s group delay is larger than 10 ns

    本文在解決高溫導微波無源器件的設計、光刻工藝、密封封裝和溫測量等難點的同時,對一個f _ 0 (中心)為4ghz ,帶寬4ghz的高溫導延遲線進行加工、封裝、測量,群時延大於10ns 。
  13. Low distortion at high current operating, highly stable on operating frequency

    -高電流下歪,高穩定性工作
  14. Design of the power amplifier for ultra - low - frequency vibrator calibration system

    用於振動校準系統的失真度功放大器的設計
  15. The whole system adopts one pll only to control vco to output the ultra wideband frequency of 2 ~ 12ghz, and realizes small volume, low cost microwave frequency source

    整個系統採用單環鎖相控制vco ,輸出2 ~ 12ghz的寬帶,實現了小體積、成本的微波源。
  16. The main results of this paper are as fellows f 1 ) illtroducing the ultrasonic technology to the rigid measurement, successful1y exploits the practical small intellectualized ultrasonic device of measuring rigidity by applying mechanical technology, electronic technology and computer science 2 ) reading clearcf displaying more various, applying more information, being easiest to accept by user because of adopting liquid crystal display ( lcd ) 3 ) theorizing the mathematical model between the signal of frequency and the rigid value on the device, possessing very importan practical significance 4 ) optimizing the every parts of the device, achieving the goals of lower wastage of energy, smaller, lighter and inexpensive 5 ) taking the measure to reduce the wastage of energy and adopting reasonable management in power supply for the device, making the device skimp more energy, prolonging the life - span of battery 6 ) utilizing the interface of rs - 232, discussing the communication between the ultrasonic device of measuring rigidity and computef, and also forecasting the foreground of advanced exploitation by user

    本文工作的主要成果是: 1 )將聲波技術引入零件表面硬度的檢測當中。應用機、電、計算機技術,研製成功較為實用的小型智能聲波硬度檢測儀2 )採用lcd ( liquidcrystaldisplay )液晶顯示,使讀數更清晰、顯示多樣化、信息量多、易於為用戶接受3 )在理論上建立了該系統的信號與硬度值的數學模型,具有非常重要的實踐意義4 )對各元器件進行優選,達到能耗、體積小、重量輕、價格便宜等目的5 )採取措施降整個系統的能耗並對系統的供電進行了合理的管理,使其進一步達到能耗,延長了電池的使用壽命。 6 )利用rs - 232標準介面,討論了該聲波智能硬度測量儀與系統機進行通訊以及用戶進行二次開發的前景
  17. Electromagnetic compatibility and radio spectrum matters - radio equipment in the frequency range 9 khz to 315 khz for ultra low power active medical implants ulp - ami and accessories - part 2 : harmonized en covering essential requirements of article 3. 2 of the r tte directive v1. 1. 1

    電磁兼容性和無線電譜情況.活性醫用植入物和附件用范圍在9 khz到315 khz的無線電設備.第2部分:包括r tte指令3 . 2條款基本要求的協調en
  18. The super - low frequency and distortion power amplifier is developed with opa512 operation amplifier produced by bb co. in america. and the analyses software of frequency spectrum based on fft is designed

    研製了失真功放大器;開發了基於fft譜分析軟體,並對它們進行測試與分析。
  19. The hardware and software design methods of the system are discussed, and the methods that solve the problem under ultra - low frequency are emphasized, such as the design of ultra - low - frequency amplifier and the arithmetic of adjusting the vibrant level. in the end, many kinds of experiments prove the performance of total system

    對校準系統的硬體和軟體設計做了有側重點的介紹,對解決下振動臺的技術難題的技術方法做了重點介紹,如放大器的設計和軟體振級調整演算法等;最後用各項試驗數據驗證了本校準系統的性能。
  20. However, the normal electromagnetism rate transducer which has the high inherent frequency of that between 5 - 30hz normally can not get the signal below 1 hz, therefore, it can not be used for inspecting same signal, which confines its applications in engineering project

    然而,由於普通的電磁式速度傳感器,其固有較高,一般都在5 - 30hz之間,很難拾取1hz以下的絕對振動信號,因此不能直接用來測量上述振動信號,制約了該類傳感器在工程中的應用。
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