超聲波源 的英文怎麼說
中文拼音 [chāoshēngbōyuán]
超聲波源
英文
ultrasound source-
Electroplating, rectifier, ultrasonic cleaner,
電鍍電源，超聲波清洗，保險箱Study on high power ultrasonic power supply based on dsp 56f
的大功率超聲波電源的研究The conclusions are as follows : the ultrasonic intensity is proportion to the laser intensity ; the ultrasonic induced by a laser line source has much more advantages than by a laser point source, such as stronger energy, higher snr, more directivity and shape ; the intensity of cfpi ' s output signal is linear with ultrasonic vibration velocity, and is effected by incidence angle and scattered angle ; snr will increase by reducing cfpi ' s bandwidth, reducing incidence angle, increasing cavity ' s length and reflectivity
在分析點光源激勵聲表面波機理的基礎上，求出了線光源激勵的超聲振動的位移表達式，發現線光源激勵的近場區表面波具有波形好，信噪比高，指向性好，幅度強等特點。通過理論推導，得出共焦fabry - perot干涉儀的輸出光強除了與樣品表面的振動速度成正比，並與入射角和散射角有關；適當減小cfpi的帶寬，增加腔長，增大鏡面反射率，或者減小檢測入射角都可以提高系統的信噪比。A driving source for ultrasonic standing wave motor with adjustable frequency, phase and amplitude
幅度均可調整的駐波超聲馬達驅動電源This paper begins with the calculation of the stator ' s resonance frequency, deals with the design and manufacture of motor, and puts forward dual nut structure of traveling wave revolving ultrasonic motor, and presents the analysis of the contract between rotor and stator in the manufacturing process, relation between the amplitude of voltage - ceremic chip and drive sources. the conclusion is that amplitude is affected by deviation of resonance frequency
同時分析了電動機的加工工藝，對超聲波電動機製造過程中功率與接觸角和振幅與驅動電源的關系進行了討論，得到了接觸角與輸出功率的關系曲線，以及超聲波電動機的振幅主要受電壓和激振頻率偏離定子環第2n階諧振頻率的偏離量確定。（ 2 ） the major circuit has been established, composed of rectifier 、 buck - chopper 、 push - pull inverter and matching network, which realizes high - power supersonic ac output. to achieve maximal output power, the pulse frequency modulation ( pfm ) has been applied to auto - adjustment of output frequency, which corresponds to the load ' s resonant frequency
（ 2 ）建立了超聲電源主電路，其中包括：整流、直流斬波、推挽逆變器和匹配網路等部分，實現了大功率超聲頻交流電的輸出，輸出頻率的脈頻調制（ pfm ）和輸出功率的脈寬調制（ pwm ） 。In this work, layered lini1 - xalxo2 ( 0 < x 1 / 2 ) solid solution materials were successfully synthesized by current co - precipitation method in the air, and their preparation and properties were deeply and systematically explored. influences of different factors on the structure and properities of samples were studied, including li resources, different performs, li / m ( oh ) 2 molar ratio, calcining heat condition, the best synthesis technics were concluded : sintered for 16h at 700 from li source ( lithium nitrate ) : m ( oh ) 2 = 1. 05 : 1, ultrasonic vibration for dispersing and catalysing are best. lini0. 8al0. 2o2 exhibited a discharge capacity of 130. 7 mah ? g - 1 in the voltage range of 2. 8 ~ 4. 40v and at a specific current of 0. 2 c. a new co - precipitation method was proposed, it included ultrasonic for dispersing and catalysing, by dropping lioh to the aqueous solution of metal nitrates, hydroxides of metals were precipitated and the resulting solution was evaporated as received
採用傳統共沉澱工藝在空氣氣氛中成功地合成出了二元lini1 - xalxo2 （ 0 < x 1 / 2 ）層狀固溶體系列，綜合考察了不同鋰源、預處理方式、鋰的配比量、焙燒溫度等條件對合成產物的結構和性能的影響，確定出了最佳合成工藝:以硝酸鋰為鋰源，超聲波作為分散動力源，鋰源與鎳鋁金屬鹽摩爾比為1 . 05 : 1 ， 700下焙燒16h的lini0 . 8al0 . 2o2樣品電化學性能最佳，在2 . 8 ~ 4 . 40v之間， 0 . 2c的倍率放電可逆容量達130 . 7mah ? g - 1 。On base of listing the technical index of switch power supply, basal principle and circuit, the chapter expounds the scheme and comes into being. chapter four is a main chapter, that expands the design and realization of control cell, lists the circuits and programs
第三章重點介紹了超聲治療的高頻正弦波產生電路的設計與實現，在詳細列出了開關電源的技術指標、基本原理、基本電路形式等基礎上給出了該系統採取的設計方案。Therefore, wool dyeing at low temperature in short time is feasible from the view of technology and economics ; it has a bright feature in dyeing industry
結果表明，超聲波染色不僅可以提高染料的平衡上染百分率，節約能源和降低染色成本，而且還可以加快上染速率，增大擴散系數，降低染料上染的活化能。Alarm systems - intrusion systems - requirements for combined passive infrared and ultrasonic detectors
報警系統.入侵報警系統.無源紅外線和超聲波組合探測器的要求Meanwhile, with the development of wdm / dwdm communication systems, more and more attention is paid on the edfas with broader bandwidth, good gain and noise feature, and gain clamping, etc. according to the tianjin natural science foundation project : intelligent fiber amplifiers and light sources, the tianjin natural science foundation project : ( c + l ) broadband fiber amplifier and the nankai - delta ( tianjin ) project : development of gain flattened erbium - doped fiber amplifiers, this dissertation is mainly focused on the study of novel gain - clamped edfa, light sources, multi - wavelength fiber laser and variable optical attenuator for gain - clamped usage, gain and noise improvement of edfa, and broadband edfa
Wdm / dwdm通信系統的發展又需要edfa具有更大的帶寬、優良的增益和噪聲特性和增益控制等功能。基於上面的情況，並結合天津市重點基金項目? ?智能光纖放大器光源的研究、天津市重點基金項目? ? （ c + l ）超寬帶摻雜光纖放大器和南開-達爾泰（天津）項目? ?開發增益平坦的摻鉺光纖放大器等課題，論文主要圍繞新型增益控制edfa 、增益控制用光源、多波長激光器及可調光衰減器、 edfa性能優化和超寬帶edfa等方面進行了理論和實驗研究。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。分享友人