frequency breakdown 中文意思是什麼
frequency breakdown
解釋
頻率急降-
Insulating liquids - determination of the breakdown voltage at power frequency
絕緣油擊穿電壓測定法 -
Insulating liquids - determination of the breakdown voltage at power frequency - test method
絕緣液體.電源頻率擊穿電壓的測定 -
Adopting the method of time domain and frequency range, the breakdown characteristic signal is analyzed, and the information of the abnormal state of valve clearance is obtained
並採用時域，頻域的分析方法對故障特徵信號進行分析，從而得到氣門間隙異常狀態的信息。 -
And the results of calculation and numerical simulation indicate, without increasing the intrinsic collector - junction area of power devices, collector - combed structure helps to raise the intrinsic heat - dissipating area and base ' s perimeter, improve heat - dissipating method of each cell of the chip, enhance the distribution uniformity of junction temperature and current of each cell of the chip, reduce the thermal resistance and raise the dissipation power pd and output power p0, fairly well relax the contradiction among frequency, out - put power and dissipation power of the devices, and further improve the devices " property against second breakdown
而計算分析和二維數值模擬分析結果表明：梳狀集電結（基區）結構在不增加器件本徵集電結面積的條件下，增大了器件的本徵散熱面積和基區周長，改進了每個子器件單元內的散熱方式，提高了單元內結溫和電流分佈的均勻性，降低了器件的熱阻，增大了器件的耗散功率和輸出功率，較好地緩解了目前傳統結構中頻率與功率、功耗的矛盾，並有利於改善器件抗二次擊穿的性能。 -
Algan / gan hemt has high breakdown electric field, fast electron drift velocity and large electron concentration, so it has been used more and more in high frequency and large power fields
Algan / ganhemt由於具有擊穿電壓高、電子漂移速度快和電子濃度大等特點，已被越來越多地應用於高頻及大功率領域。 -
Silicon carbide is becoming the most promising semiconductor material for high temperature, high frequency and high power devices because of its superior properties such as wide band gap, high breakdown field, high electronics saturation drift velocity, and high thermal conductivity
Sic材料由於具有寬禁帶、高臨界擊穿電場、高飽和電子漂移速度、較大的熱導率等優良特性，因此成為製作高溫、高頻、大功率器件的理想半導體材料。 -
The growth rate of inflectional instability and viscous instability also saturate similarly to the primary and nonlinearly generated disturbances. the main effect of inflectional instability mode in the final breakdown seems to interact with the disturbances having developed and thus widens the frequency spectrum to turbulent state
屬于拐點不穩定性的高頻二次不穩定模態對最後轉捩的影響主要體現在與其它擾動的相互作用，並導致出現紊流狀態寬帶頻譜。 -
By means of the experiment, the relationship between the power infused and the frequency which cause the gas discharge breakdown is drawn
並通過實驗測定了引起氣體擊穿時所需的注入功率與頻率之間的關系。 -
Its operation frequency is 1. 38mhz, with an integration of a power mosfet whose breakdown voltage is up to 50v. the allowable input voltage ranges from 2. 7v to 5. 5v and its output voltage can be programmed between - 2v and - 15v, additionally, the output current is in a 200ma range in typical application. to avoid the poor efficiency of the pwm control scheme at light load, a skip - cycle - mode operation is introduced that allows system ’ s efficient operation at the light load
該電路工作頻率為1 . 38mhz ，內部集成耐壓50v的功率mosfet ，輸入電壓范圍2 . 7v 5 . 5v ，輸出電壓可在- 2v - 15v間連續可調，典型工作條件下輸出電流在200ma之內;同時，在輕負載下提供跳周期模式，具有很高的待機效率。 -
Rubber, vulcanized - determination of electrical breakdown strength and voltage resistant at commercial power frequency
硫化橡膠工頻擊穿電壓強度利耐電壓的測定方法 -
Experiments with controlled excitation of primary and secondary instabilities have been performed to study the process leading to the final breakdown of laminar swept wing flow. two types of high frequency secondary instabilities are identified
在人工激勵激發基頻與定常擾動條件下，施加高頻人工激勵，研究附面層流流動在高頻二次不穩定性擾動的發生與增長過程。 -
The impedance match must be extremely good because at the frequency that the antenna beam ~ vork on the broad - side position, the reflcctions from all the bends add in phase to produce a large input vswr. in addition, a poor design of thc bends leads to high - power breakdown
慢波線中使用了大量的波導e面180彎頭，系統對其駐波特性提出極高的要求，文中用高頻模擬軟體（ hfss ）優化設計了波導e面180彎頭。 -
Abstract : a fast drag system is designed to simulate the law of speedvariations of a certain power system engine in the process of its start by means of electric power drag and the theory of automatic control and through adopting a new type of electric machine and frequency - change techniques, thus enabling the system to achieve quick start, instantaneous breakdown and accurate following of the electric machines speed variations curve set in advance at will
文摘:運用電力拖動與自控理論，採用新型電機及變頻技術，設計一種快速拖動系統藉以模擬某動力系統發動機啟動過程轉速變化的規律，使該系統能夠達到快速啟動，瞬間制動，精確跟隨事先設定的電機轉速變化曲線的目的。 -
A high voltage power integrated circuit based on soi is developed, which has the following features : the breakdown voltage of power mosfet exceeds 600v, the highest operating frequency is 150 khz, and the largest output current is 1a
論文設計實現了一種基於soi的高壓驅動電路，其性能指標為:耐壓600v ，工作頻率150khz ，最大輸出電流1a 。 -
The current data on balance of payments, international investment position, or flow of funds accounts have two major short - comings - low frequency of quarterly data and limited breakdown of data by currency, sector, instrument etc. the bis, imf and oecd are examples of institutions which have made some attempts to collate relevant statistics but they are far from complete or timely
目前有關國際收支平衡國際投資狀況或基金帳目流向的數據有兩個主要的不足之處a只有季度數據，公布次數不夠頻密及b在貨幣行業及金融工具等方面的數據分類，不夠仔細。國際結算銀行公司基金組織和經濟合作與發展組織等機構均曾嘗試收集有關統計資料，但有關數據卻不夠完整，而且也不能及時提供最新數據。
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