有效輸移率 的英文怎麼說
中文拼音 [yǒuxiàoshūyílǜ]
有效輸移率
英文
effective transport rate- 有 : 有副詞[書面語] (表示整數之外再加零數): 30 有 5 thirty-five; 10 有 5年 fifteen years
- 效 : Ⅰ名詞(效果; 功用) effect; efficiency; result Ⅱ動詞1 (仿效) imitate; follow the example of 2 ...
- 輸 : Ⅰ動詞1 (運輸; 運送) transport; convey 2 [書面語] (捐獻) contribute money; donate 3 (失敗) l...
- 移 : Ⅰ動詞1. (移動) move; remove; shift 2. (改變; 變動) change; alter Ⅱ名詞(姓氏) a surname
- 率 : 率名詞(比值) rate; ratio; proportion
- 有效 : effective; valid; efficacious
-
In pumping fluid with gas, pressure boost can be improved by enhancing the pump rotation speed, thereby improving the performance of the pump to a certain degree ; when the gas content is constant, by increasing the inlet pressure, the pressure boost can be enhanced and the pump efficiency be improved remarkably ; when the gas content is rather high, there will be a problem of matching between the gas pressure and the fluid pressure ; the performance of the multiphase pump can also be improved by means of rational design of buffer vessel and homogenizer
試驗分析認為,氣液混輸工況下,提高泵轉速可以提高增壓,在一定程度上能改善多相泵的工作性能;含氣率一定時,增加進口壓力,可使多相泵增壓值增大,泵效明顯增加,最大含氣率點后移,但含氣率很高時,存在氣液壓力相匹配問題;改進緩沖罐和均化器的設計,有利於氣液互相夾帶,避免氣囊產生,可改善多相泵的輸送性能。Owing to its excellent adaptability to large angle - displacement between two transmission shafts and other characteristics such as large transmission ratio, terse mechanism, high transmission efficiency, cardan cross - pin spindles has been widely used as an important mechanical part in transport machines, metallurgy machines, petrolic machines, heavy machines, etc. as an effective and promising approach to resolve complicated development of modern software, component - based development ( cbd ) is put forward to change the present way of software development by producing software through assembling ready software components and its final target is to realize the industrialization of software development totally
十字軸式萬向聯軸器能夠很好地適應傳動軸間的較大角位移,而且具有傳遞扭矩范圍大、結構緊湊、傳動效率高、維修保養方便等特點,是一種重要的傳動部件,因此在交通運輸、冶金、重型機械等領域中得到廣泛應用。基於組件的開發是近幾年發展並日益成熟起來的一種軟體開發新方法,其核心思想是以流水線方式、通過組裝組件生產軟體,從而容易實現軟體開發的工業化。A model of the interface state density distribution near by valence band is presented, and the dependence of the threshold voltage on temperature, the c - v characteristics and the subthreshold characteristics are predicted exactly with this model ; the effects of s / d series resistance on the output characteristics, transfer characteristics and effective mobility of sic pmosfets are analyzed. thirdly, the output characteristics and the drain breakdown characteristics are modeled with the procedure medici. the output characteristics in the room temperature and 300 ? are simulated, and the effects of gate voltage. contact resistance, interface state and other factors on sic pmos drain breakdown characteristics are analyzed
提出了一個價帶附近的界面態分佈模型,用該模型較好地描述了sicpmos器件閾值電壓隨溫度的變化關系、 c - v特性曲線以及亞閾特性曲線;分析了源漏寄生電阻對sicpmos器件輸出特性、轉移特性以及有效遷移率的影響;論文中用模擬軟體medici模擬了sicpmos器件的輸出特性和漏擊穿特性,分別模擬了室溫下和300時sicpmos器件的輸出特性,分析了柵電壓、接觸電阻、界面態以及其他因素對sicpmos擊穿特性的影響。By using the larger magnetic permeability, magnetic fluid was used to improve the magnetic circuit efficiency in torque motor, enlarge the output torque and displacement of torque motor, and the output flow of servo valve. correspondingly, the ability of noise - overcoming and system damping was enhanced due to the property of magnetic fluid. as a result, the stability of servo valve and servo - control system can be improved
由於磁流體具有較大的導磁率,可提高力矩馬達磁路效率、增大力矩馬達的輸出力矩和位移,從而增加伺服閥的輸出流量;同時,利用磁流體的粘度特性,可增強力矩馬達阻尼及抗干擾能力,從而增強伺服閥及伺服控制系統的穩定性。The advantages of using leo satellite are as following : on the one hand the satellite orbit is low, so the transmission delay is short, the power loss is small ; on the other hand the development of cell communication, multi - access, frequency multiplex and etc also provide a technique guarantee to the leo satellite - mobile - telecommunication. so the leo system is considered to be a satellite - mobile - communication system with a great future
低軌道衛星是一種運行於1000公里左右的高空中的人造衛星,利用leo衛星實現個人通信的優點在於:一方面衛星的軌道高度低,使得傳輸延時短、路徑損耗小,多個衛星組成的星座可實現真正的全球覆蓋,頻率復用更有效:另一方面蜂窩通信、多址、點波束、頻率復用等技術的發展也為低軌道衛星移動通信提供了技術保障。On the basis of the steady - state semi - empirical model of the tire and the concepts of the relaxation length and the effective slip ratio, a non - steady semi - empirical model to express the tire longitudinal - slip response to the low - frequency input of the transient vertical load and transient slip ratio was presented
摘要在穩態半經驗模型的基礎上,根據鬆弛長度和有效滑移率的概念建立了能表達時變垂直載荷及時變滑移率低頻輸入下的輪胎縱滑特性非穩態半經驗模型。A source routing framework is proposed to route traffic flows proactively over multiple paths, which tries to optimize routes for long - lived flows based on dispersity routing ; based on mathematical analysis, our approach disperses incoming traffic flows onto multiple paths according to path qualities. long - lived flows are detected and migrated to the shortest path if their qos could be guaranteed there. suggesting non - disjoint path set, four types of dispersion policies are analyzed, and flow classification policy which relates flow trigger with link state update period is investigated
提出一種以業務量內在特性為基礎的前攝式多路路由演算法:以對業務量的內在特性分析為基礎,該方法在多路發送數據流的同時檢測非最短路徑上的長流,而後在保證服務質量的前提下將長流遷移到最短路徑上傳輸;前攝式多路路由使用以路徑質量評價為基礎的業務流分佈方法有效提高網路吞吐量,通過周期性的路徑質量評價適應時變網路狀況;模擬實驗表明,該方法可以有效提高「盡力而為」方式下的網路服務質量和資源利用率;浙江大學博士學位論文3The main research is as follows : analyze and research the boundary constraint and the structure characteristic and segment the frame making use of the shell element, the pipe element etc. on the base of it the practical finite element model has been established ; analyze the mode of the frame by dint of the finite element model. and get the inherent frequency and the vibration mode of the frame. tentatively estimate the dynamic characteristic of the frame and analyze the inherent frequency that may be lead to the resonance
論文的主要研究工作如下:分析研究車架的邊界條件和結構特性,並用殼、管等單元對該車架進行離散,建立一種切實有效的車架有限元模型;對該車架的有限元模型進行模態分析,求得其的固有頻率和振型,並對車架的動態特性做出初步評估,分析可能引起車架振動的固有頻率;在模態分析基礎上,研究發動機輸出的簡諧力引起的車架位移響應(即諧響應分析) ,以考察摩托車車架各部位的振動情況並與模態分析對比,分析是否與該車架的固有頻率相耦合而導致共振;在深入研究車架的模態分析及諧響應分析、清晰地認識了摩托車車架動態特性的基礎上,分析並提出了採用橡膠減震器對車架進行隔振的減震方法。Among them, phase shifted ( ps ) full bridge ( fb ) zero - voltage - switched ( zvs ) pulse - width - modulated ( pwm ) dc / dc converter has strong competitive power in big power capacity fields. but it has some limitations such as smaller load range with zvs and larger circulation energy. the ps - fb - zvs - pwm dc / dc converter with a saturable inductor utilizes saturable inductor s critical saturable current characteristic and storage energy, to enlarge load range with zvs and improve output efficiency under light load
其中,移相控制零電壓開關脈寬調制dc / dc全橋變換器在大容量領域很有競爭力,但它具有實現零電壓開關負載范圍小,循環能量大等限制,帶飽和電感的移相控制零電壓開關全橋變換器利用飽和電感的臨界飽和電流特性及儲能,來擴大零電壓開關( zvs )的負載范圍,提高輕載時的輸出效率,具有非常重要的研究價值。The measured data show that the bedload sediment transport rate is related more closely to the effective stream power within the bed - surface layer than to the river stream power
實測資料表明,推移質輸沙率與床面層內有效水流功率有良好的相關性,且高於推移質輸沙率與水流功率的相關性。Based on the relationship between energy and flow within the bed - surface layer, a relationship between the bedload sediment transport rate and effective stream power within the bed - surface layer is derived
摘要基於床面層內的水流能量關系,推導了推移質輸沙率與床面層內有效水流功率的關系式。In mobile communication and high - speed wireless digital communication, multi - path, the finity of channel bandwidth and faultiness of the channel, lead to the bringing of intersymbol interference ( isi ) when data transfer. this is an important factor that degrades the performance of communication. however channel equalization technique can eliminate the isi and noise, it can also reduces the bit error ratio
在移動通信及高速無線數據通信中,多徑效應和通道帶寬的有限性以及通道特性的不完善性導致數據傳輸時不可避免地產生碼間干擾( isi ) ,成為影響通信質量的重要因素,而通道的均衡技術可以消除碼間干擾和噪聲,並減少誤碼率。On the base of the fujian power system that has the special configuration of " large power generator with small power system " in 2000, constructs power system models of fujian and fujian interconnected with other parts, does a lot of calculation and analysis and simulation, researches the security mechanism and rule of the fujian special power system interconnected with large power system. the above connection can keep security and stability and can make obvious benefits, but when the transmission power reach to excessive quantity the main power grid will increases interconnected flow - in or flow - out exchange power load. the power operation state tended to instability ; the infirmable interconnection make s the damp infirmable
本文以2000年前後具有「大機組小電網」特殊結構的福建電力系統為背景,建立了福建電力系統及其與外部互聯的數學模型,開展大量的模擬計算分析,研究了「大帆組小電網」電力系統與大容量電力系統互聯偏弱的安全穩定性的機理和規律:前述互聯可以安全穩定運行,取得顯著效益,當傳輸功率達到一定量后,主網架增加了送出或吸收互聯交換功率的負載,系統運行狀態向穩定性水平有所下降的方向轉移;聯絡偏弱使阻尼偏弱,聯絡線小幅低頻振蕩和大幅低頻振蕩易被激發,聯絡線一旦重載斷開,系統高周或低調嚴重。The volume of the output filter can be reduced greatly used in cascade inverter with carrier - phase - shifted spwm technology which has a high equivalent switching frequency and a good output sine wave. it is the base of the high power density of asi
載波移相正弦脈寬調制技術有獨特的消諧波優勢,其等效開關頻率高,輸出波形正弦度好,可以大幅減小濾波器體積,為實現系統的高功率密度奠定基礎。But with the high - speed development of tele - medical life signal monitoring technology, many problems emerged, such as no compatibility caused by nonstandard format ; incorrect diagnoses caused by data losing and delay ; incapable of transmitting different kinds of life signal at the same time ; the demand of transfer, etc. consequently, in order to enhance the efficiency and quality of life signal monitoring further, some proprietary regulation must be set down
但在遠程生命信號監測技術高速發展的同時,也暴露出一些問題,比如格式不規范導致的不兼容,數據延遲或丟失引起的錯誤診斷,無法同時傳輸多種類型的生命信號,病人需要一定的移動性,等等。因此,要進一步提高生命信號監測的效率和質量,就必須制定一些專有規則。Recently, multiple input multiple output ( mimo ) system which originates from the employment of multiple antennas at transmitter and receiver has many advantages such as large system capacity, high spectral efficiency. on the other hand, orthogonal frequency division multiplexing ( ofdm ) which bases on the orthogonal transmission of sub - carriers also has some obvious merits such as strong anti - multipath ability, high spectral efficiency. the combination of the two techniques mimo - ofdm, has become a hotspot recently and regarded as promising technique for future next - generation mobile communication systems
近來,在無線通信系統中的收發兩端同時使用多根天線的多入多出( mimo , multiple - input - multiple - output )通信結構,具有系統容量大、頻譜效率高等優點;基於正交的多路子載波并行傳輸的正交頻分復用( ofdm , orthogonalfrequencydivisionmultiplexing )技術,具有抗多徑能力強、頻譜效率高等優點,二者的結合,即mimo - ofdm技術,被認為是構建下一代移動通信系統的框架技術。分享友人