transmission zero 中文意思是什麼

transmission zero 解釋
傳輸零點
  • transmission : n 遞送;傳遞;傳達;傳染;移轉;【機械工程】傳動;傳遞;變速器;聯動機件;【無線電】傳送;發射;...
  • zero : n (pl zeros zeroes)1 【數學】零;零號。2 零位;零點,起點;(溫度表的)零度,冰點;座標原點;無...
  1. This article has studied the deficiency and shortcoming of various kinds of methods of the parameter measurement of transmission line at present, proposed the measurement under operation on the basis of gps, researched gps application way and error that may appear in the power system synchronal sampling, put forward the parameter computing technology based on the information of both sides of transmission line, which solved some problems that exist in the parameter measurement, especially the problem that exist in the zero - sequence parameter measurement of transmission line with mutual inductance

    本文研究了目前輸電線路參數測量的各種方法,分析了其中存在的不足和缺點,提出了基於gps的輸電線路參數在線測量方法,研究分析了gps在電力系統同步采樣中的應用方式以及可能出現的誤差,在同步采樣的基礎上提出了基於雙端信息的線路參數計算方法,較好地解決了輸電線路參數測量中存在的一些問題,尤其是多回互感線路零序參數測量困難的問題。
  2. Using mass flux controller ( mfc ), gas regulation system achieved accurate mix of two kinds of gases, steel bottle gas ( some compressed gas ) and zero air ( pure air ). for the sake of data transmission between dynamic air regulator and other equipments in the monitoring air quality system, normal digital interface ( rs - 232c ) make correlative role of communication interface so that automatic survey could be achieved

    本儀器採用國際先進的自動控制配氣原理,採用精密質量流量控制器( mfc )來控制鋼瓶氣(某種壓縮氣體)與零空氣(純凈無污染的空氣)的混合比來得到精確濃度的校準氣體,以便於對各種氣體監測儀進行高精度校準。
  3. " l ' lle brief introduction of underwater acoustic channel and the cl1art of image transmission syste111, innovation of ti1is paper are given in the first chapter. basic technology and hardware using in this project are introduced in the seco11d chaptel transform methods, especially the wavelet transformation are introdtlced il1 the tl1ird cllapter. ii11age ' s coding methods are introduced in cl1apter four, witll tilem ti1e zero tree method is the el11pl1ases

    第一章給出對水聲通道特性簡介以及圖像信息傳輸的系統框圖、本研究創新之處;第二章介紹圖像處理的基本技術以及本研究的硬體環境;第三章介紹圖像數據的變換方法,著重介紹了小波變換涉及到的知識;第四章介紹圖像編碼,重點介紹了零樹法編解碼;第五章介紹本研究的軟體、硬體設計、對零樹法的具體改變。
  4. Unified power flow controller ( upfc ) is one of the most powerful and most promising controllers of facts. if we use upfc to control the transmission parameters, terminal voltage, line impedance and phase angle in normal situation and use it to compensate zero sequence and negative sequence currents when one of transmission lines is cut off, we can implement two phases operating in high voltage transmission lines, which can improve stability and reliability for the transmission system

    統一潮流控制器( upfc )是功能最強、最具發展潛力的靈活交流輸電系統( facts )控制器之一,如果在常規條件下,用upfc實現輸電線路的電壓調節、移相、潮流控制、阻尼振蕩等功能,在發生單相永久性接地或單相斷路故障時,由傳統的三相跳閘改為單相跳閘,用upfc的並補來濾除兩端系統的零序和負序電流,用upfc的串補來提高輸電線的傳輸功率,以實現兩相長期運行,那麼輸電系統的穩定性、可靠性將大大提高。
  5. From the perspective of minimum transmission losses, an instantaneous reactive power theory for systems with any number of phases and with or without neutral line is developed. under the new definition, each quantity has its own physical meaning, and the zero sequence current can be decomposed into active and reactive components. furthermore, a generalized compensation method for zero sequence current is developed

    從輸電損耗最小的角度出發,提出了任意相無中性線或有中性線系統的瞬時無功功率理論,在新的理論下,每個量都有清晰的物理意義,且能分解出零序電流的有功分量和無功分量,並給出了通用的零序電流補償方法,揭示了瞬時無功功率理論與傳統平均意義下的無功功率理論的聯系及本質區別,從而為研究hvdc - vsc及各種facts裝置的無功功率控制奠定了理論基礎。
  6. It is mainly made of reinforced pp with short time of self - priming and long life, a kind of zero - leakage pump for automation long distance control and fluid transmission of strongly corrosive liquid

    該泵以增強聚丙烯為主要材料,自吸時間短、壽命長,是自動化遠程控制和流動輸送強腐蝕液體的無漏泵。
  7. Thus this thesis presents a method to estimate length and positive parameters of transmission line, and a method to estimate length, positive parameters and zero parameters of line at one time

    由此,本文提出了一種利用故障前的電氣量來校正線路正序參數和長度的方法,以及一種利用區內出現的缺相運行情況對線路正序、零序參數和長度同時進行校正的方法。
  8. Then the non - interventional condition is that the relative geodesic curvature is zero. furthermore, for the transmission of the parallel or crossing axles, if the datum surface is the pitch one, the non - interventional condition is naturally satisfied

    考慮到平行軸的法向圓弧齒輪傳動已臻成熟,論文重點研究了相交軸與交錯軸條件下法向圓弧齒輪傳動的基本方案。
  9. We have investigated transport properties of electrons in magnetic quantum structures under an applied constant electric field. the transmission coefficient and current density have been calculated for electron tunneling through structures consisting of identical magnetic barriers and magnetic wells and structures consisting of unidentical magnetic barriers and magnetic wells. it is shown that the transmission coefficient of electrons in a wider nonresonance energy region is enhanced under an applied electric field. the resonance is suppressed for electron tunneling through double - barrier magnetic ( dbm ) structures arranged with identical magnetic barriers and magnetic wells. incomplete resonance at zero bias is changed to complete resonance at proper bias for electron tunneling through dbm structures arranged with different magnetic barriers and magnetic wells. the results also indicate that there exist negative conductivity and noticeable size effect in dbm structures

    對磁量子結構中電子在外加恆定電場下的輸運性質進行了研究.分別計算了電子隧穿相同磁壘磁阱和不同磁壘磁阱構成的兩種磁量子結構的傳輸概率和電流密度.計算結果表明,在相當寬廣的非共振電子入射能區,外加電場下電子的傳輸概率比無電場時增加.對于電子隧穿相同磁壘磁阱構成的雙磁壘結構,共振減弱;對于電子隧穿不同磁壘磁阱構成的雙磁壘結構,無電場作用時的非完全共振在適當的偏置電壓下轉化為完全共振,這時的電子可實現理想的共振隧穿.研究同時表明,磁量子結構中存在著顯著的量子尺寸效應和負微分電導
  10. The following is the main works and conclusions of this thesis. the novel upfc needs high power rate because it is generally used in high voltage transmission lines. after studied high - power converters and the literatures of upfc, the main circuit topology of novel upfc base on diode - clamping multilevel inverter is presented and the principle of using novel upfc to eliminate zero sequence and negative sequence currents is analyzed

    本文所做的主要工作及得出的主要結論如下:由於upfc一般用於高壓輸電線,其功率等級要求很高,在綜合研究大功率變換器和upfc現有文獻的基礎上,提出了基於二極體箝位多電平變換器的新型upfc的主電路拓撲,分析了用其來濾出高壓輸電線非全相運行時所產生的零序和負序電流的原理。
  11. The transmission phase has a abrupt tt change when corresponding transmission amplitude tends zero

    當透射矩陣矩陣元為0時,對應的透射相位存在幅度為的突變。
  12. The validity and superiority of all these are proved by use the parallel converter of novel upfc to implement reactive current compensation, zero sequence and negative sequence currents compensation, harmonic currents compensation and the mixed compensation of them. this thesis also studies that use novel upfc to implement two phases operating in high - voltage transmission lines by theory analyze and simulation testify

    提出了基於多電平變換器的廣義大功率有害電流補償的概念,提出了適合於它的多環定時滯環控制方案,通過用新型upfc的並聯變換器實現無功補償、零序和負序補償、諧波補償及它們的綜合補償來驗證了其有效性和優越性。
  13. The purpose of distributed network file system, the dnfs, is to improve the transmission performance and reliability of network file system. it also implements " zero management " which means the file system should reach the read / write performance comparable to the local file system with the minimum manual participation

    分散式網路文件系統即dnfs文件系統設計的目的在於提高網路文件系統的傳輸性能和可靠性,同時實現「零管理」 ,即在盡量減少人工干預的同時,實現與本地文件系統接近的讀寫性能。
  14. According to the characteristic of subway power alternating current transmission line, a new synchronous method based on reference zero point of the wave shape of voltage was proposed. the method is suitable to short distance line such as the subway power alternating current transmission line

    根據地鐵電力交流聯絡線的特點,作者提出了一種適合於短距離線路保護的參考電壓零點的同步演算法,並對該演算法的優缺點進行了詳細的分析與模擬。
  15. Zero - transmission level reference point

    零傳輸位準參考點
  16. The rapid and reversible change between fluid and solid enables erf potential applications in mechatronic devices, cars and general machines. the transmission ability of a self - made cylinder coupling with zeolite - based erf was investigated, the torque transmission of the coupling in wide ranges of driving speed and electric field was measured. the relationship between the transmission torque, the zero field viscosity of erf and shear yield stress of erf under different electric fields was obtained and compared with theoretical prediction

    本文用沸石和硅油配製的電流變液,在自製圓筒式聯軸器上研究了在一定的速度范圍和有無電場作用條件下測量了其扭矩傳遞能力,獲得了傳遞扭矩與零電場電流變液粘度以及電場中電流變液的剪切屈服應力之間的關系,並與理論值進行了比較。
  17. When ccc are used for spreading codes, multiple access interference ( mai ) is zero theoretically even under asynchronous transmission. if cc / ccc are used for spreading codes, one data symbol could be transmitted during one - chip duration

    若採用互補碼作為擴頻碼,理論上而言,不管在同步模式還是異步模式下,都不存在多址干擾;又可用特殊的調制方式做到在1個碼片的時間內傳輸一個數據符號。
  18. Zero - order transmission grating

    零階透射光珊
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