逆變的 的英文怎麼說

中文拼音 [nìbiànde]
逆變的 英文
contravariant
  • 逆 : Ⅰ形容詞1 （方向相反） contrary; counter 2 [數學] inverse; converse Ⅱ動詞1 （抵觸; 不順從） go aga...
  • 的 : 4次方是 The fourth power of 2 is direction
  1. It follows that every reversible adiabatic process is one of constant entropy, and may be described as isentropic.

    可見可逆絕熱過程都是熵不變的過程，可以把這種過程叫做等熵過程。
  2. The load character and control object for a parallel inverter is analyzed, the conclusion that series and parallel resonant circuit are two antithetic circuits is pointed out, this provides a theoretical guide to the control circuit design for these two inverters

    分析了並聯諧振逆變器的負載特性及控制目標，指出串並聯諧振逆變電路是兩種對偶電路，為這兩種逆變器控制電路的設計提供了理論指導。
  3. Because, this is of chinese herbal medicine outer the organization is stimulated suddenly by high fever, instantly constrictive, caky even, its protein is formed on cellular wall cannot go against the metamorphic layer that turn, prevent moisture development, organize interior to composition dissolves hard and be released, such, the decoct of medicaments active ingredient goes out rate reduce greatly, affect curative effect badly

    這是因為中草藥的外層組織忽然受到高熱刺激，立即緊縮，甚至凝固，其蛋白質便在細胞壁上形成不可逆轉的變性層，防止水分深入，組織內部成分難以溶解並釋放出來，這樣，藥物有效成分的煎出率大大降低，嚴重影響療效。
  4. Firstly, chromatism analysis and wavelet transform are used for color image compression coding. in this method, one of the three color components of a color image ( for example the g component of a rgb color image ) is coded using wavelet transform, and the chromatism between g and other two color components rg = r - g, bg = b - g is coded respectively using chromatism analysis. during decoding, g ~ is first reconstructed using wavelet inverse transform and inverse quantisation, and rg, bg are reconstructed using chromatism analysis inverse transform ; then r, b are calculated by r = g + rg and b = g + bg respectively

    其一是應用色差分析和小波變換對彩色圖象進行壓縮編碼，該方法是對彩色圖象的三個色彩分量之一，如rgb圖象的g進行小波變換編碼，而對g與另兩個色彩分量的差值（即rg = r - g和bg = b - g ）進行色差分析編碼，解碼則是通過反量化和小波逆變換得到g ^ ，通過色差分析的逆變換得到兩個重構的色差rg ^和bg ^ ，再算出r ^ = g ^ + rg ^ 、 b ^ = g ^ + bg ^ ，最後由r ^ 、 g ^ 、 b ^重構圖象。
  5. This paper proposes a soft - swiching inverter based on mrac and analyzes the design of main circuit drive circuit and control circuit in details

    提出了一種基於模型參考自適應控制的軟開關逆變器，詳細分析了主電路、驅動電路和控制電路的設計。
  6. Based on the sha lo wan profiler data at 0740utc, the vertical shear at around 1, 100 ft was close to 8 kt per 100 ft. although this was lower than the 8 kt per 100 ft which has been used in the windshear warning system at the old kai tak airport, the increase in head wind was nonetheless significant due to the steep climb angle

    根據沙螺灣的氣流剖析儀在0740utc錄得的資料顯示，在約1 ， 100尺的垂直切變接近每百尺每小時8海里。雖然此切變低於以往啟德機場的風切變警報系統所用的每百尺每小時8海里，但因為陡峭的爬升角度，令到逆風的增加變得顯著。
  7. Commutation failure factors analysis in hvdc transmission system

    直流輸電系統中逆變器換相失敗的因素分析
  8. Covariance and contravariance in delegates

    委託中的協變和逆變c
  9. Covariance and contravariance in delegates c programming guide

    委託中的協變和逆變（ c #編程指南）
  10. In this paper, a kind of output current feed - forward circuit is added into the input of the current loop. by adding this compensatory circuit, the output character of the inverter is improved greatly

    本文還研究了一種提高逆變器輸出電壓外特性的思路，通過將負載電流正反饋給逆變器的電流環輸入端，從而達到提高輸出電壓的外特性的目的。
  11. In addition, we analyse the dead time effects of pwm control on the output waveform

    另外還分析了逆變橋上下管驅動信號上的死區對輸出電壓波形的影響。
  12. In the realization of the inverter control circuit, the frequency self - following system with optimal dead time based on dsp is researched

    在逆變控制電路的實現中，研究了基於dsp的具有最佳死區的頻率跟隨控制系統。
  13. Because dead time is compensated at the same time, the output waveform is improved, and output torque is strengthened in low frequency

    進行了死區補償，使逆變器在低頻輸出時波形明顯改善，提高了系統在低頻時的轉矩輸出。
  14. A circuit topology of the inverter with duty cycle extended active clamp forward style high frequency pulse dc link is adopted by each independent inverter. each inverter is cascaded by a circuit with duty cycle extended active clamp forward style high frequency pulse dc link and a dc / ac inverting bridge. the control strategy of voltage mode pwm forwardback is adopted by the former, and the control strategy of three - state discrete pulse modulation ( dpm ) hystersis current is adopted by the later

    每個獨立的航空靜止變流器採用占空比擴展有源箝位正激式高頻脈沖直流環節電路拓撲，由占空比擴展有源箝位正激式高頻脈沖直流環節電路與dc ac逆變橋級聯而成，前級採用電壓型pwm前饋控制技術，后級採用三態dpm電流滯環控制技術。
  15. In the next place, by studying the change of the resonant frequency of the whole system, this paper designs the circuit to track the resonant frequency of the system by cd4046 mainly. at the same time, in order to improve the efficiency and get better dynamic capability of the converter, we choose pll and fuzzy control after comparing the pll circuit, fuzzy circuit and pll ? fuzzy control circuit. in the end, this paper brings forward the control blue print to realize the drive control circuit of the high frequency converter, using the dsp chip as the key part to realize four routes of pwm drive pulses with dead band of the control system

    其次，通過對整個系統諧振頻率變化的分析和研究，設計了以鎖相環cd4046為核心的鎖相環控制電路，同時，在綜合比較鎖相環控制、模糊控制以及模糊控制和鎖相環復合控制三種控制演算法的基礎上，進行了系統模擬，得出採用復合控制可使跟蹤電路既具有鎖相環路較好的穩態性能，又擁有模糊控制較好的動態性能，系統魯棒性能好，同時也提高了逆變器的效率。
  16. The first kind of algorithm is based on s - box controlled by key, the algorithm distinguishes most of other block ciphers, its visible quality is that its s - box is not regular and fixative, but controlled by block cipher ' s key. the second kind of algorithm is based on smn ( d ) array code, it makes full use of the visible quality of smn ( d ) array code possessing big code distance ( d ). the thesis discusses the two algorithms " reversibility, security and their qualities, the

    第一種是基於「 s -盒由密鑰控制」的變結構分組密碼，該演算法區別于其它大部分分組密碼最大的特點是它的s -盒不是固定不變的而是由密鑰控制產生；第二種是基於smn （ d ）陣列編碼的變結構分組密碼，該演算法充分利用了smn （ d ）陣列編碼具有碼距大的特點；文中對這兩個演算法的可逆性、安全性及其性能等進行了探討和分析，分析結果認為這兩個變結構演算法正確、有效且安全。
  17. Finally, the experimental study of the reversible rectifier is done. the resultfof the experiment proves that both the theoretic analysis and the simulation results are correct

    根據原理電路的理論設計製作了一套硬體電路，並對此電路進行了整流和逆變的實驗研究，驗證了電路的模擬和理論分析的正確性，為實際工程應用打下了一定基礎。
  18. Under the test conditions of ud = 2800v and 350hz switching frequency, the current in three phase inverting test reached to loooar. m. s, which can fully meet the requirements of 350km / h emu with 2600v link voltage and 950ar

    在中間直流環節電壓u _ d = 2800v ，開關頻率為350hz的條件下，逆變的試驗電流達到了1000ar . m . s ，完全能夠滿足350km h高速動車組對變流器中間電壓2600v 、輸出電流為950ar . m . s的要求，表明了地面試驗機組的研究獲得了成功。
  19. In the chapter one, the primary principle of invert technique and its types have been dealt with. it also previews the development on high power invert technique in the future, as the result pointing out that the trend of the coming invert technique are high frequency, high power and highly intelligence

    本文在第一章論述了逆變的基本原理與分類，並對大功率逆變技術的未來發展作了展望，指出了高頻化、高容量化、與智能化是其今後的發展趨勢。
  20. In this paper, researching and producing on current waveform control system of inverter carbon dioxide welding machine is given. the overall plan, the design of hardware structure, the programming and debugging of software is described in detail. the bang - bang and alterable structure discrete pid synthetic control algorithm are used to modulate the width of pwm signal in real time, to acquire the fiat character by driving and controlling the opening and shutting time of igbt, the technology of " double impulse " is adopted to realize electric current waveform control

    本文介紹了逆變波形控制co _ 2焊機控制系統的研製，詳細闡述了總體方案的制定、硬體研製及軟體的編寫與調試，採用變結構、離散型pid + bang - bang復合控制演算法、實時調節輸出pwm信號的脈沖寬度，驅動控制用於逆變的大功率開關管igbt的開通與關斷時間，獲得逆變焊機平外特性。
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