聲子激發 的英文怎麼說
中文拼音 [shēngzijīfā]
聲子激發
英文
phono excitation-
For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr
本文對于微腔半導體激光器，提出站模型，能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性，利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論；對于電流i噪聲、自發發射壽命_ （ sp ）噪聲、自發發射因子噪聲、光子壽命_ p噪聲，以及電流調制、 _ （ sp ）調制、調制、 _ p調制，在小信號近似下，得到了相應的激光器的傳遞函數；在大信噪比的前提下，對激光器進行了頻域分析，分別計算了它們在不同參數下的信噪比增益，分析了其抗噪聲性能。In the present dissertation, friction - induced noises emitted by a flat specimen rubbing against another flat specimen or a ball specimen under reciprocating sliding are studied. the detailed observation of the scars is conducted by means of a scanning electrical microscope ( sem ), laser scanning microscope ( lsm ), optical microscope and profilometer. the dynamic state variables are analyzed in detail using the discrete wavelet transform
使用電子掃描顯微鏡（ sem ） 、激光掃描顯微鏡（ lsm ） 、光學顯微鏡和表面輪廓測量儀等設備對摩擦噪聲發生的區域進行了詳細的觀察和分析，運用小波變換技術對摩擦噪聲狀態下的動力學變量進行了深層次的研究，應用matlab simulink語言對摩擦系統進行了振動動力學模擬，系統地研究了摩擦噪聲的形成機理。Developments in electronic, sonic, and laser technology will provide telemetry that will increase accuracy and timely management response.
電子學，聲學和激光技術的發展為增加預測的準確性和及時採取管理提供了遙測技術。It implies that gene expression in plant cells might have changed under the stimulation of sound wave. thirdly, the cell cycle of protoplast of control group and stimulated group ( stimulating for 9 days ) was estimated by flow cytometer. the results showed that the number of cells of stimulated group decreased in g0 / g1 phase and increased in s phase
圍繞中心法則分別測定了dna 、 rna和可溶蛋白質的含量，發現聲波刺激組的dna含量變化不明顯，而rna和可溶蛋白質的含量都有所升高，且以刺激9天的實驗組最為突出，表明在強聲波的作用下，有關應力響應的轉錄因子被啟動，轉錄水平提高，從而翻譯合成較多的蛋白質，促進植物的生長發育。Zno film is a novel - direct compound semiconductor with wide band gap energy of 3. 37ev and a exciton binding energy 60mev at room temperature. due to its the prerequisite for visible or ultraviolet light emission at room temperature, it has the tremendous potential applications for ultraviolet detectors, leds, lds. zno thin film is used widely and effectively in the fields of surface acoustic wave devices, solar cell, gas sensors, varistors and so on because of its excellent piezoelectrical performance
室溫下禁帶寬度為3 . 37ev ，激子束縛能為60mev ，具備了室溫下發射紫外光的必要條件，在紫外探測器、 led 、 ld等領域有著巨大的發展潛力； zno薄膜以其優良的壓電性能、透明導電性能等使其在太陽能電池、壓電器件、表面聲波器件、氣敏元件等諸多領域得到廣泛應用。When x is above 1. 3 %, the emission spectra are strongly broadened and do not show any well - defined features, and their peak positions shift to lower energies correspondingly with increasing x. the large band - gap bowing of gap1 - xnx alloy is induced by the impurity band formation due to the intercenter interaction
對中心發光的nn3束縛激子的零聲子線及其聲子伴線，並得到了nn3的所有聲子伴線（ l0 、 la 、 ta ）的s因子在約20k卜50k范圍內與溫度的關系。Strait jewelry is specialized in the production of clothing ingredients, xionghua, shoes, flowers, hand application list flowers, the application list hand clothes, lace, beads movies and dolls, gold flocking, made jewelry and braided, belts, drawing beads, all wearing jewelry, the application of clothing, shoes, and hats, leather decorative supplies, the production of major equipment flocking machinery, ultrasonic embossed, laser engraving, special printing, transfer flocking clothing and other supplies products processing sector
海發飾品是專業生產服裝配料、胸花、鞋花、手勾花、手勾衣服、花邊、珠片、公仔、金粉植絨、發飾、辮子、皮帶、訂珠等、各種服裝飾品，適用各種鞋帽服裝皮具裝飾輔料，生產主要設備植絨機械、超聲波壓花、激光雕刻、特種印花、轉移植絨等服裝輔料加工製品機構。Theory of semiconductor 、 absorption 、 direct transition 、 indirect transition 、 emission 、 radiation recombination 、 iradiation recombination 、 donor 、 acceptor 、 exciton 、 phonon 、 photon 、 polarition
半導體基本原理、吸收、直接躍遷、間接躍遷、輻射、發光復合、非發光復合、施子、受子、激子、聲子、光子、恆化子。Some of them unable to clearly locate its position and apply unsuitable competition strategy, they depend on advertising, small tricks etc. they are short of suitable arrangement, organized unsystematically, short of science indication. all of them never thought of marketing strategy. although they put into a lot of recourses, but they are unable to win the market, gain the advantage of competition
目前，隨著旅遊業的興起，市場競爭日益激烈，然而，許多地方的旅遊開發的定位模糊，採用的競爭策略不當，多靠打廣告、出點子、造聲勢的辦法，這些辦法缺乏科學性、系統性和層次性，都未從營銷戰略的高度來開展營銷，盡管投入了大量的人力、物力、財力，都不能贏得市場，獲得競爭優勢。Thin - type ultrasonic motor and the excitation of stator vibration mode
薄型超聲電機與定子振動模態的激發A unified theoretical model was given considering thermal activation, phonon - assisted absorption and nonradiative energy transfer processes. ( 6 ) the relationship between the fluorescence and the composition in niobate - silicate and niobate - phosphate glasses was studied
考慮熱激活、聲子輔助吸收過程與溫度猝滅建立了穩態動力學方程並對樣品熒光發射強度隨溫度的變化關系進行了量化解釋。At the same time, we show that under a proper nitrogen doping concentration, due to the " concentration quenching " effect, the full spectrum of the nn3 center ( i. e., its zero phonon line and various phonon replicas ) is revealed without the interference from the spectra of other higher energy centers ( especially nn4 - nn6 )
Gapi . xn :的發光譜在低組分下由尖銳的nn 。線及其聲子伴線組成，隨著組分x的提高，這些尖銳的的譜線逐漸展寬，並向低能端移動，在這個過程中，激子的能量傳輸起著重要作用Ultrasonic motors are a new kind of solid actuators that come into being since 1980 ’ s, which use inverse piezoelectric effect of pzt to excite stator ’ s elliptical vibration and produce driving power by frictional coupling
超聲波馬達是上世紀80年代開始發展起來的一種新型驅動器，它是利用壓電陶瓷的逆壓電效應激勵出定子表面質點的橢圓軌跡振動，依靠摩擦耦合來實現驅動。Mri scanning, developed in this very building ; the contraceptive pill ; modern infertility treatment ; ultrasound scan for unborn babies ; unlocking the double helix structure of dna ; keyhole surgery ; placing fluoride in the water supply ; the portable defibrillator ; the hepatitis b vaccine ; strained quantum - well lasers which contain the information used in cds, dvds and the internet ; dna fingerprinting. a whole speech could be given that amounted to nothing more than a list of examples
正是在牛津這個地方研究和開發出來的核磁共振掃描、避孕藥、現代不孕癥治療術、胎兒超聲波檢查、解開dna雙螺旋結構之謎、鎖孔外科手術、在供水系統中加氟、便攜式心臟除顫器、乙肝疫苗、在cd 、 dvd光盤上存儲信息的應變量子阱激光器、 dna指紋識別技術等。In may, police recovered a cache of explosives and automatic rifles from the region based on information they said was provided by arrested extremist islamists
五月，警方在該區發現一個儲存炸藥和自動步槍的窩點，並有消息聲稱，這些是由一個被拘留的伊斯蘭激進分子提供。The main manifestation of a dry throat, itching, foreign body sensation, voice hoarse, as the secretion of inflammatory stimulation when dry cough
其主要表現為嗓子發干、發癢、有異物感、聲音嘶啞，由於炎性分泌物的刺激時有乾咳。Then we analyze the static character of sbs to obtain the sbs gain factor and threshold under continuous wave and pulse. because there is no stokes seed in fiber hydrophone system, we analyze the sbs based on the noise initiation of sbs model. we use the finite differential time domain method to do the sbs numerical simulation in fiber
由於光纖水聽器中的sbs是在沒有種子光注入下產生的，於是我們推導了噪聲激發模型下描述sbs的耦合波方程組，對該方程組使用時域有限差分法進行了數值模擬，並推導了連續光和脈沖光下的閾值。The french, excited by all that had happened, were talking loudly among themselves ; but as they passed before dolohov, who stood switching his boots with his riding - whip, and watching them with his cold, glassy eyes, that boded nothing good, their talk died away
那些法國人為剛剛發生的這一切而激動，相互間大聲議論著當他們從多洛霍夫面前走過時，他們看見他用馬鞭抽打著靴子，以冷峻的目光在注視他們時，他們不再吭聲了。分享友人