source noise 中文意思是什麼

source noise 解釋
源噪聲
  • source : n 1 源頭，水源，源泉。2 根源，本源；來源。3 原因；出處；原始資料。4 提供消息的人。5 血統。vt 〈美...
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  1. Secondly, we make an in - depth study and analysis in allusion to the given oscillatory circuit - butler common base harmonic circuit. the detailed analysis of the dynatron which is the main noise source in the oscillatory circuit is also made, including how excitation affects the dynatron and crystal

    然後針對特定的振蕩電路結構-串聯型巴特勒共基振蕩電路-進行深入的研究和分析，並對主振電路中主要的噪聲源-三極體進行的深入分析，包括激勵對三極體及晶體的影響。
  2. The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.

    聲發射源與接收訊號傳感器間的距離以及環境噪聲的電平是選擇頻帶的主要依據。
  3. As the range increases thermal noise tends to take over as the major source of inaccuracy.

    當射程增大時，熱噪聲將成為一個主要的誤差源。
  4. ~ ( 252 ) c _ f - source - driven neutron noise analysis method is a way of measuring and analyzing the reactivity of reactor or subcritical reactor, which detects subcritical neutron multiplication factor, prompt neutron decay constant, and so on

    ~ （ 252 ） c _ f源驅動噪聲分析法是一種測量、分析反應堆和次臨界系統的快速反應性的方法，可作為臨界安全的瞬時檢測方法。
  5. Indeed, kcrc has taken the approach to mitigate mos rail train noise at source by adopting a multi - plenum system

    事實上，九鐵已從聲源手，採取多重隔音措施，以消減列車運作時的聲浪。
  6. Noise of a running train will be mitigated by low vibration track, floating slab track, train skirts and a multi - plenum system to attenuate airborne noise at source

    為減低列車經過時所產生的噪音，支線的路軌會裝置彈性底板及浮動平板，列車亦會裝上裙邊及多重隔音系統，以消減因結構震蕩而產生的聲音。
  7. Physically, the resistor is effectively the source of noise.

    從物理上來說，電阻器等效于噪聲源。
  8. W is a zero mean white noise source.

    W是一個零均值的白噪聲源。
  9. A study on the surface noise source identification of a diesel engine

    柴油機表面噪聲源識別技術研究
  10. Firstly the dissertation analyses the reason of vibration and noise of the transmission gear and the box, drawing a conclusion that the change of gear mesh rigidity and transmission error are the crucial causation to engender vibration and noise of the gear - box ; the main source of the noise is the syntonic noise in box vibration and noise

    本文首先分別分析了變速箱傳動齒輪和變速箱箱體的振動噪聲產生機理，得知產生變速箱傳動齒輪振動噪聲的主要因素是輪齒嚙合剛度的變化和傳動誤差的影響;且在變速箱箱體振動噪聲中自鳴噪聲是汽車變速箱的主要噪聲源。
  11. W is a zero mean white noise source

    W是一個零均值的白噪聲源。
  12. That is the reason that all over the countries have never stopped researching for mask jamming technology of radar. at present, the mask jamming source mainly comes from the thermal noise and zener avalanche noise of semiconductor devices. but the noise ’ s quality isn ’ t stabile because of the differences of semiconductor devices each other and the changes of exterior conditions

    目前採用的遮蓋性干擾的噪聲源主要來自半導體器件本身的熱噪聲或齊納雪崩噪聲，但各器件本身的不一致性和外界條件變化等因素使噪聲輸出質量不穩定;同時由於此類信號不能再生，不利於科學研究。
  13. Based on an amplified spontaneous emission ( ase ) source, a ring - cavity fiber laser, in which sensor element acted as the reflector of the cavity, was achieved with high - signal noise ratio ( snr ) and high - power. it was demonstrated that the output power was maximum, when output coupler ratio of the coupler was seventy percent

    實驗證實耦合器的輸出耦合比選為某一個最佳值70 ，當980nm泵光工作電流為50ma時，其輸出功率達3 . 5mw ，且輸出激光波長與作為反射鏡的光纖光柵中心波長相同。
  14. According to the project of adaptive multi - rate speech coding ( amr ) being put forward by the third generation group of the mobile communication, this paper takes the principle of the speech arithmetic as the base, studies the technologies including the source controlled rate, voice activity detector, comfort noise and the error concealment unit in amr, discusses its the characteristic of adaptation and analyses its performances particularly. amr c codes are researched carefully through the modules being divided into and debugged under the tms320c54x provided by the ti corporation, and optimized in selecting the method of c code embedded assembler codes and simplified in the search codebook combining with the theory of speech coding, which are based on the realization about theory and practice of the optimization of amr speech coding

    從自適應多碼率語音編碼演算法的c代碼出發，對它進行模塊劃分後作了系統分析，將其在vc下調試通過，進一步在ti公司提供的tms320c54x環境中進行調試，結合語音編碼理論，對演算法進行優化，採用了在c代碼中嵌入匯編和簡化自適應碼本和固定碼本搜索的方法，部分地提高了c代碼效率，為實現自適應多碼率語音編碼的優化奠定了理論和實踐基礎。
  15. The major job is manufactured a transmitter, which has three upmixer channels. its function is to up convert the signals from c - band to ka - band. the input local oscillator is provided by a low frequency crystal oscillator which has a good performance of phase noise, through 512 times multiply to ka band. this sysetem is used in the laboratory as transmitter source of the fuze, for the multidimensional objects in practise, which lead to the complexity of the reflect signal, so the amplitude, frequency and the phase of the transmit signals both have a key role in dealing with the reflection signals. therefore, this system requires for both the coherence of the single channel ’ s amplitude, phase and multi channels

    本文的主要工作是應用戶要求製作一具有三發射通道的上變頻系統，可以將c波段的微波信號上變頻到ka波段的毫米波信號。系統的本振輸入基頻由一相位噪聲非常好的低頻率晶振提供，經過512次的倍頻放大至ka波段。本系統作為實驗室中引信的發射源，由於目標反射信號具有時變的多維性，反射信號變得極為復雜，在信號處理時，不僅信號幅值、頻率有決定意義而且相位關系也很有決定意義。
  16. Transmitting noise is main interfereing source of switch power supply which is coupled through lines of power supply, singal, interlinkage and grouding

    摘要傳導型噪聲是開關電源的主要騷擾源，它可以通過電源線、信號線、互連線、接地導體等進行耦舍。
  17. This subject comes from the project : c band low phase noise tunnable jumping frequency source in chengdu saiying science and technology co, . ltd. the frequency synthesis technology of pll + mixer is adopted in the final scheme. at first, the developing history of the frequency synthesis technology is reviewed. then direct frequency synthesis technology 、 pll frequency synthesis technology are introduced

    本文首先首先簡述了頻率合成技術的發展歷史，介紹了直接頻率合成技術、鎖相環頻率合成技術、 pll +混頻的頻率合成技術的基本理論以及具體的系統設計中應該考慮的方面。
  18. Due to temperature performance of fbg, a reference fbg is adopted to compensate temperature and the compensation principle is expounded. moreover, this scheme not only realizes temperature compensation but also reduces repeatability error of ffptf and errors from power fluctuation of light source, noise of pd and noise of electro - circuit. in the end, temperature and strain performance of fbg is tested and

    基於光纖光柵的溫度響應特性，提出用一個參考光柵來進行光纖光柵傳感陣列溫度補償的設計方案，並論述了其補償原理，證明了該方法的可行性；同時可以看出，該方法不僅可以實現溫度補償，也可以減小光纖f - p可調諧濾波器的重復性誤差以及光源功率波動、探測器噪聲和電路噪聲等引起的誤差。
  19. According to the characteristics of the noise source, noise reduction structure was designed in outlet and inlet of cooling system respectively, it turned out spreader noise is decreased obviously

    針對這些噪聲源的特性採取相應的降噪措施，在進、排風口分別設計了消聲結構，使攤鋪機噪聲明顯降低。
  20. This article firstly deal with the sound source, noise measurement and analysis, noise control principle and some basic noise control technology, then elaborate the current noise detection standard and method for the coach in our country, the noise mechanism. characteristics and the measures of noise - controlling, finally. describe the actions of noise control, noise detection and optimization in our coach detailedly, which have met with the expectation

    本文首先敘述了聲音的產生原因、噪聲的度量和分析方法；介紹了噪聲的控制原理和原則以及一些基本的噪聲控制方法。然後，介紹了我國目前的客車車內噪聲的檢測標準和方法；詳細闡述了客車主要噪聲源的產生機理和噪聲特性以及車內噪聲控制措施；最後，理論與實際相結合，對我公司的lck6122型大型客車採取了相應的噪聲控制措施以及並其進行了測試和優化。
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