超低聲 的英文怎麼說

中文拼音 [chāodīshēng]
超低聲 英文
infra-audible sound
  • 超 : 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...
  1. Design of microwave ultra - broad band low noise amplifier

    微波超寬帶低噪聲放大器的設計
  2. As a second - rate crooner sings about the beauties of his lover s face, his own face metamorphosizes into the most surreal shapes and contortions possible

    一個低聲吟歌的人歌頌他愛人的臉的美。他自己的臉孔形狀在不停變動，令其超現實地扭曲。
  3. Furthermore, it is also verified by chassis dyno tests that lpg motorcycle has better emission performance than gasoline engine, and has better acceleration performance e. g. exceed acceleration than former gasoline engine, and has low noise level characteristics as well as has ability to achieve equivalent level fuel economy performance compared with former gasoline engine

    整車動力性、經濟性和排放性轉鼓臺架試驗對比表明： lpg摩托車整體排放性能優于汽油摩托車；最高車速略有下降但加速性基本與汽油摩托車相同（超越加速性優于汽油摩托車） ； lpg摩托車具有良好的低噪聲特性，且整車燃料消耗率及其經濟性與原機基本相當。
  4. Based on the research of the characteristics of piezoelectric ceramic, this paper presents the analysis of the movement of the stator surface points and work principle of motor. this paper describes a theory about the influence of the ultrasonic vibration on the frictional properties of ultrosonic dring, and finds that the horizontal vibration produces friction driving force and vertical vibration affects horizontal driving effect

    並且對行波型超聲波電動機的減摩現象進行了研究，發現在接觸區定子表面上一點的水平振動產生摩擦驅動力，垂直振動只起影響水平驅動效果的作用，得出垂直方向超聲振動具有減振作用是引起超聲驅動動摩擦系數降低的原因。
  5. The intelligent mine will be the most important weapon system to defend arming helicopter hedgehopping in future war. passive acoustic detection technology is the key technology. with the researching of the national defence pre - researching project which is the research of acoustics compound fuse of anti - helicopter intelligent mine, this paper presents acoustic localization algorithm and discusses the affect of wind to the localization, then a method of how to correct the affect of wind has been studied, upon this a dsp software system has been designed

    智能雷彈是防禦超低空飛行的武裝直升機的重要武器系統，而被動聲探測技術是其關鍵技術，本文結合「九?五」國防預研項目「反直升機智能雷彈聲復合引信技術」的研究，對空間目標聲定位演算法和風對被動聲定位的影響及如何對這種影響進行修正進行了深入分析，並在此基礎上設計了dsp軟體系統。
  6. The intelligent mine will be the most important weapon system to defend arming helicopter hedgehopping in future war. passive acoustic detection technology is the key technology. with the researching of the national defence pre - researching project which is the research of acoustics compound fuse of anti - helicopter intelligent mine, this paper presents two type of acoustic localization algorithm, emphasizes the discussion of algorithm and presicion of space acoustic localization with sensors at different height in detail and compares them

    智能雷彈是防禦超低空飛行的武裝直升機的重要武器系統，而被動聲探測技術是其關鍵技術，本文結合「十?五」國防預研項目「反直升機智能雷彈聲復合引信技術」的研究，對兩種空間目標聲定位演算法進行了深入分析，重點討論了空間高低陣定位演算法，分析了定位精度。
  7. Results : the sonographic manifestations in the ipsilateral course variation vertebral artery revealed that the diameter and flow velocity were decreased, pi and ri were increased

    結果：椎動脈走行變異其變異側椎動脈超聲表現為：管徑較窄， pi和ri較高，流速較低。
  8. Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism

    超聲波電機（ ultrasonicmotor ）是近二十年來發展起來的一種新原理電機，其原理不同於傳統的電磁型電機，它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動，通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比，具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點，因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。
  9. Loudspeakers, mylar speakers, notebook speakers, modem speakers, tv speakers, tweeters, subwoofer speakers, car speakers, ceramic piezo buzzer plates, condenser microphones, dynamic microphones, dynamic receivers, buzzers and transducers, and also ultrasonic sensors

    （生產、經營）產品及類型介紹：全頻喇叭，超薄喇叭，手提電腦喇叭，電視機喇叭，高音喇叭，低音喇叭，汽車喇叭，蜂鳴片，電容咪、動圈式咪頭，受話器，蜂鳴器及超聲波傳感器。
  10. With an almost occult carefulness he turned the door handle, and opened the door an inch.

    他帶著一種幾乎是超自然的謹慎，旋轉門把柄，隨著低微的嘎吱聲，門開了一條縫。
  11. In the heart of the continent it is almost as high as the summits of the alps, yet soundings show that in places that rock floor is below sea level

    大陸的中心幾乎與阿爾卑斯山等高，然而，超聲探測顯示，巖石底部的許多地點都低於海平面。
  12. Abstract : a research on theory and practice is conducted on the acoustic methods of discharge measurement in low head hydropower plant. taken hydraulic efficiency experiment in certain hydropower plant as examples, the general methods about how to locate the discharge measurement plane, install transducers and choose the integration methods are put forward. an improvement method is proposed finally

    文摘:從理論上和實踐上，對低水頭電站超聲波測流進行了較為詳細的研究，並以某水電站為例，對測流斷面定位、聲路布置和面積積分給出了一般方法
  13. Increasing ultrasound intensity in the range of cavitation threshold and cavitation peak value, decreasing monomer concentration and increasing the temperature make the induction period shorter. under optimized reaction conditions, the conversion of ba can reach 90 % in 11 min at high n2 flow rate the viscosity average molecular weight of the obtained pba reaches 5. 24 106. the molecular weight of pba varies with ultrasonic irradiation time, indicating that the ultrasonic induced emulsion polymerization is dynamic and quite complicated, polymerization of monomer as well as degradation of polymer occurs concomitantly

    一、實現了無常規化學引發劑存在下的超聲輻照引發丙烯酸正丁酯（ ba ）間歇乳液聚合，制備了pba納米粒子，在11min內轉化率達到90 ，分子量達5 . 24 10 ~ 6 ，隨反應時間的延長而降低，表明超聲輻照引發乳液聚合是一個動態的復雜過程，單體的聚合和聚合物的降解同時發生。
  14. The result shows that with the addition of rare earth elements, ultrasonic irradiation and magnetic field, the chemical component, surface configuration, microstructure and properties of electroless co - ni - b and co - fe - b alloy changes remarkably. such kind of change can be described as the followings. firstly the depositing speed of electroless alloy bath is raised while the polarizability and cathodic overpotential are reduced ; secondly the surface quality of the alloy coating and adhesion of the coating and matrix are improved ; thirdly in the coatings the content of the elements in the transient group increases, but the content of cobalt decreased ; fourthly the amorphous structure is transformed to microcrystal structure and polycrystal structure ; fifthly the microhardness and wear resistance of the coating are enhanced ; sixthly coercitive force is reduced, and magnetoconductivity of the coating is increased ; lastly the magnetic intensity of the coating increases with the addition of energy and light rare earth elements such as ce, la and decreases with the addition of heavy rare earth elements such as y. on the other side, when the alloy coatings passes through the heat treatment under the temperature of 250 or 500, their properties will change

    結果顯示化學沉積co - ni - b 、 co - fe - b工藝在稀土元素（ ce 、 la 、 y 、 dy ） 、能量（超聲波、磁場）介入后，沉積過程、合金成分、鍍層形貌結構和性能都有顯著變化，表現在：鍍液的陰極極化過電位和極化度降低，沉積速度提高；鍍層的結合力、表面質量改善；鍍層中過渡族元素的含量增加，輕元素硼的含量降低，同時證實了稀土元素與過渡族元素共沉積的可能性；鍍層的顯微結構由非晶態向微晶和多晶態轉變；鍍層的顯微硬度與耐磨性提高，力學性能優化；鍍層的矯頑力降低；磁導率提高；鍍層的磁化強度在能量（超聲波、磁場）和輕稀土元素ce 、 la介入后提高，重稀土元素y介入后降低。
  15. Ultralow noise microwave cryoelectronic system

    超低噪聲微波低溫電子學系統
  16. Dsp56f805 samples the ultrasonic pulse coming back from the target, then measures the distance and shows it on led. tms320vc5509a is accomplished the detecting speed and the main control of the radar system, is 16 fixed dsp with high performance and low power produced by ti company. dsp5509a samples the wave coming from t / r module, then measures the target ’ s speed and send this information to the assistant control chip - p89v51 based on boost c51 core mcs produced by philips company, which controls the lcd

    測距雷達系統的控制和信號處理的核心晶元是motorola公司的dsp型16位單片機56f805 ，由它對超聲波回波脈沖進行ad采樣后，計算目標距離並在七段數碼管上顯示。測速雷達系統中信號處理的核心晶元是ti公司的超低功耗、高性能的16位定點dsp ? ? tms320vc5509a ，由它對收發組件輸出的多普勒回波進行采樣，計算出目標運動速度后，送給輔助控制晶元? ?飛利浦公司生產的基於c51內核的增強型單片機p89v51 ，並且在液晶顯示器上顯示速度信息。
  17. Ultrasound cavitation and sonoluminescence ( sl ) generation have gained great interests in recent years, in this paper, we attributed to discuss the influence of ultrasonic frequency and the gas component inside on the sl threshold pressure and have gotten some value results. in addation, the method for measuring the ultrasonic pressure intensity dynamically by the means of sl image is also discussed

    本論文在調研國際、國內有關聲致發光研究歷史和進展的前提下，對如何降低聲致發光的閾值在理論上和實驗上展開工作，取得了一定的成果，並設計了一個新的測量超聲場強度的方法，實驗上證明了其可行性。
  18. So in this paper, the principle of electroptical non - invasive dual - ray methods are fist present in detail. in the theorem of simple structure and low power consumption, we select detecter with fitble wavelenth and low power msp430 processor, and design high stable ray - emitt circuit, low noise pre - amplifier, background disturbance counteract circuit, the signal are low - filtered and sent to msp430 " a / d transform directly to digital signal processing

    為此，本文詳細分析了光電無創雙光束法測定脈搏血氧飽和度的基本原理，在結構簡單，功耗小的原則下，選用合適發光波長的探頭和信號處理器，設計出光強穩定的發光電路，低噪聲前級，以及本底干擾對消電路，通過兩級低通直接送至ti公司的超低功耗混合信號處理器msp430進行a / d變換得到原始的數字信號。
  19. By designing the circuit structure of preamplifier and selecting new elements such as ultra low noise operational amplifier and linear opto - coupler, some difficulties in eeg acquisition is overcome and the common mode rejection ratio ( cmrr ) of preamplifier is highly increased. so eeg can be amplified and detected well

    通過對前置放大器等電路結構的精心設計，選用超低噪聲的集成運算放大器以及線性光耦合器等新器件，克服了腦電信號採集中經常遇到的一些困難，使前置放大器具有較高的共模抑制比，從而能夠較好地放大檢測出所需的腦電信號。
  20. From this, the room is very important to voice. combine of can make comprehensive develop primarily is a " building ". room although more big more good, however, buy the empress class getting to output the power to with the market. the " space physical volume " should can t exceed 2 10000 cubic foot. and this physical volume of high, deep, the breadth is too good enough to use what device the reruns is several can disorderly true

    音波並不是我們可以從測量器顯像屏的一種平面波形。而且從聲源物體單元以最大角度向四面八方作約半球形擴散。以書本理論而言，一個10尺高16尺闊26尺長的房間就可以有27 . 7尺的對角長度，也可以聽到21至22周的超低頻了。
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