three-level 中文意思是什麼

three-level 解釋
三能級
  • three : n. 1. 三個人[東西]。2. 三歲，三時。3. 【板球】3字型。
  • level : n 1 水平儀，水準儀；水準測量。2 水平線，水平面；水平狀態；平面，平地。3 水平，水準；水位；標準；...
  1. In addition, the country will perfect the three - level ( county, township and village ) agrotechnique popularization network step by step, support the development of various non - governmental special technical organizations, as well as form a service system for popularizing agricultural technologies in which the state, collective and various non - governmental technical organizations will work in coordination

    逐步健全縣、鄉、村三級農業技術推廣網路，扶持各類民辦專業技術組織的發展，形成國家、集體和各種民辦技術組織相互配合、相互補充的農業技術推廣服務體系。
  2. A svpwm control algorism for three - level inverter and its simulation

    三電平逆變器空間電壓矢量控制演算法模擬研究
  3. This thesis studies the law of affecting de - noise result and the selection of the threshold and the wavelet function, the combination of wavelet and fft in the fault diagnosis of turbine - generator sets : by the de - noise anslysis of blocks and sin signals, concludes : to blocks signals, usually adopts soft threshold ; the law of affecting de - noise result is when use wavelet auto - de - noise, with the increasing of decomposed level, the de - noise result becomes worse while the level blow the 3, when the level above 3 and when uses wavelet packet, it is the other way round ; the best de - noise methods of the signal is that uses " dbl " wavelet function, three level, soft and " rigrsure " threshold

    本文研究了分解層數對消噪結果影響的規律和閾值、小波函數的選取，結合小波分析與fft分析診斷汽輪發電機組的故障。通過對brocks和sin兩信號的分析，得出：對blocks信號進行分析一般採用軟閾值；分解層數對消噪結果影響的規律為用小波自動降噪在分解層數小於3時，隨著分解層數的增加，消噪結果變好，反之，則變差，用小波包降噪時隨著分解層數的增加，消噪效果變好；適宜選用dbl小波軟rigrsure閾值自動消噪。
  4. This paper presents a method that chopping wave is done by switch devices which consist of three - level resistance regulating module and intelligence power module ipm, and which realizes constant - current discharge of storage battery. to achieve the intelligence control of the drive protection and the discharge process of ipm, the paper designs circuit formed by igbt threshold drive pulse pwm signals. ipm fault - blocking protection circuit and microcomputer 80c196. the devices can accurately control the 0 ~ 150a discharge current and the discharge time of the storage battery and calculate the releasing power

    實現蓄電池恆流放電過程智能控制是蓄電池放電裝置發展的必然趨，本文提出了一種通過三極電阻調節模塊和由智能功率模塊ipm為開關器件進行斬波從而實現蓄電池恆流放電的方法。為達到對ipm的驅動保護和放電過程的智能控制，文中設計了igbt門極驅動脈沖pwm信號形成電路和ipm故障封鎖保護電路及由單片機80c196為核心的微機控制器。本裝置能夠對蓄電池進行0 150a放電電流及放電時間的精確控制及釋放容量的計算。
  5. First choice in the lowermost level, a total of three - level options, and then start the game started

    先在最下面選擇級別，共有3個級別可選，然後點「 start 」開始游戲。
  6. Introduction : first choice in the lowermost level, a total of three - level options, and then start the game started

    先在最下面選擇級別，共有3個級別可選，然後點「 start 」開始游戲。
  7. In the process of processing image, image ' s vision effect is improved by some image enhance technique such as neighboring region average and pixel expanding. in accord with the feathers of the soil microphotograph, a three - level segmentation scheme is used to segment the soil microphotograph

    在圖像處理過程中，對圖像進行了增強處理改善圖像視覺效果，採用了諸如灰度變換、改進的鄰域平均法和像素點擴張法改善圖像對比度以及消除圖像中的噪聲。
  8. Study of energy feedback snubber circuit in high power ipm three - level converter

    大功率三電平變流器中的能量回饋型吸收電路
  9. The spectrum evolution of the femtosecond laser pulse in a three - level organic molecular medium ( 4, 4 ' - bis ( dimethylamino ) stilbene ) is studied theoretically by solving the maxwell - bloch equations using an iterative predictor - corrector finite - difference time - domain method

    摘要通過採用預估校正的時域有限差分法求解麥克斯韋布洛赫方程，我們研究了飛秒激光脈沖在三能級有機分子（ 4 ， 4 ' -二甲氨基二苯乙烯分子）介質中傳播時脈沖的頻譜演化情況。
  10. Quantum interference occurs in a three - level a system with near - degenerate dipole allowed transitions, which are coupled to the same linearly polarized incoherent field

    如，當a型的兩個躍遷與一個線性極化的非相干場進行耦合時，非相干泵浦產生量子干涉。
  11. Based on the above theoretical analysis, a 1kw three - level buck converter with passive soft switching is designed in this thesis

    在理論分析的基礎之上，本文結合多電平技術與無源軟開關技術，設計了一臺1kw的無源軟開關三電平buck變換器。
  12. The main work of this thesis is theoretical and experimental research on non - isolated single - end three - level dc / dc converters with passive lossless soft switching. a 1kw three - level buck converter with passive soft switching is designed to verify the research

    本文的主要工作是對無源軟開關三電平非隔離dc dc變換電路的理論與實踐研究，設計並實現了一臺功率1kw的無源軟開關三電平buck變換器。
  13. The fourth chapter mainly discusses the operation thinking of the three - level managerial system of curriculum in our country, i. e., to seek the balance of centralization and decentralization

    第四部分主要探討三級課程管理體制在我國的運行思路，即力求集權與分權的平衡。
  14. The characteristic of the three - level managerial system of curriculum centrally reflects in the balance between centralization and decentralization, and national curriculum reflects centralization, local curriculum and school - based curriculum reflect decentralization

    我國三級課程管理體制的特點集中體現在集權與分權的平衡，國家課程體現集權的一面，地方課程和學校課程體現分權的一面。
  15. The three - level managerial system of curriculum of our country is a new managerial system of curriculum, it is different from previous centralization and decentralization. it is neither the pure centralization nor the pure decentralization, but is the combination of them

    我國的三級課程管理體制是一種新型的課程管理體制，它區別于以往的集權制與分權制，既不是單純的集權制，也不是單純的分權制，而是集權與分權相結合的一種課程管理體制。
  16. Aiming at the compensation benefits calculation combined with development layout of the yellow river mainstream cascades is now taken into account the dynamic characteristic of different level years, the compensation benefit simulation model of the yellow river mainstream cascade reservoirs is adopted to calculate the power generation compensation benefits of the yellow river upstream run - of - river power stations in three level years of 2000, 2010 and 2020

    摘要針對以往補償效益的研究都是靜態計算而言，本文結合不同水平年黃河幹流梯級的滾動開發規劃，考慮不同年代補償效益的動態特性，採用黃河幹流梯級水庫補償效益的模擬模型，計算了2000 、 2010以及2020三個水平年黃河上游徑流式梯級電站的發電補償效益。
  17. Teleportation of an unknown two - particle three - level entangled state by unitary operations

    通過幺正操作傳送未知兩個三能級粒子糾纏態
  18. All sorts of imperceptible factors making the system get worse, including the harmonic of the inverter and magnifying of dv / dt over long cable and the effects after applying the inverter. i applied the three - level main circuit structure to the esp system, so that the high voltage problems resulted by low endureing voltage can be solved, at the same time avoided the voltage distributing because of devices in series

    為此本文將三電平主電路結構運用到潛油電泵變頻系統中，以解決由於當前器件耐壓較低而要求實現中高壓問題，同時避免了由於器件串聯而引起的均壓問題，具有諧波含量較二電平變頻器要低和體積較低壓單元串聯方式要小等特點。
  19. Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field

    文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質
  20. Teleportation of an unknown four - level atomic state by epr of a - type three - level atom

    單個未知多能級粒子態的概率隱形傳輸
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