電負差 的英文怎麼說
中文拼音 [diànfùchā]
電負差
英文
electronegativity difference-
As a comparison, ba1. 03ce0. 8gd0. 2o3 - was synthesized by sol - gel method. among these samples, nonstoichiometric samples were synthesized for the first time. the research work involved : the crystal phase of the sinters were determined by xrd ; ionic conduction under different experimental atmospheres was measured by gas concentration cells ; performances of hydrogen - air fuel cells with the sinters as electrolytes and porous pt as electrodes were measured
用粉末x射線衍射儀鑒定它們的結晶相；在（ 600 1000 ）范圍內，以燒結體作為電解質隔膜，多孔性pt黑為正、負電極， pt - rh合金網為集電極，分別組成氫濃差電池、氧濃差電池及氫?空氣燃料電池並測定了它們的性能，研究了不同氣氛下樣品的離子導電特性及影響燃料電池性能的因素。Though there are a certain level of counteractive impacts to the market power from the price - differentiation agreement and dynamics of demand, the influence of market power cannot be eliminated ; 3 ) in the electricity market, the market power size is greatly influenced by the supply - demand relationship, extent of concentration, and market collusion
雖然差價合約和負荷需求彈性對市場力有一定的抑制作用，但並不能消除市場力的存在。 （ 3 ）電力市場的供需關系、市場的集中度以及市場共謀的有效性極大地影響著市場力的大小；發電企業的成本和發電容量的限制在某種程度上也影響著市場力的實施效果。" this pattern has implications for the gender gap, given that high leisure use was a negative factor for progress.
如果我們接受較常把電腦用在娛樂方面對學生學習有負面的影響，這個模式也許就可以解釋英國男女學生間學習落差的現象。A complementary input stage, which consists of a p - channel pair and a n - channel pair, was used in the circuit, so that the common mode input range can extend from rail to rail. a dcls is used to shift the n - transistor curve leftward to overlap the p - transistor curve properly and keep constant transconductance in the whole common mode input range
輸入級採用pmos差分輸入對和nmos輸入差分對並聯的結構，從而實現共模輸入范圍擴大到電源的正負兩端，並且通過兩個源級跟隨器平移nmos輸入管跨導曲線，使nmos輸入管和pmos輸入管跨導曲線的適當交疊，從而保持了這個輸入級的跨導在整個共模輸入范圍內保持恆定。It shows that the injection quantity and the difference of temperature distribute as a parabola which is at the same load, and the minimum of the parabola corresponds to the optimum quantity of injection ( g ). under the condition that the quantity of injected mass, the air speed and the heat quantity is respectively g, v and q, the research demonstrates that the pentium iv chip ' s temperature variation can be controlled under 40c and work normally when the wind speed overpass 1. 5m / s and the power dissipation of the chip is 60w. otherwise this paper calculates the flooding limit of thermosiphon with several different methods
對其充灌量、散熱量、電子元件（ cpu模擬晶元）表面與環境溫度之差及通風、流速的影響進行了系統的測試，發現充液量與溫差的關系在負荷不變時呈拋物線分佈，其極小值點對應的充液量是最佳充液量g 。在充液量為g時，對風速v 、散熱量q進行的研究表明，當風速超過1 . 5m / s后，奔騰晶元在60w發熱條件下晶元溫度小於40 ，能滿足長期正常工作。Finally, we can not use electric power but the engine of bus or subsidiary engine to drive air compressors of bus air conditions. because the change range of turnaround speed of engine is very wide, that brings difficulties in controlling the rate of flow of cold - producing medium. in the control of bus air - conditions, preventing evaporator from freezing to make the air - conditions work with high efficiency and controlling the temperature of railway carriage are the basic tasks in air - condition control
與一般的建築空調相比，汽車空調的工作環境惡劣，條件差，控制難度要增加很多，主要體現在以下幾個方面：一是車外熱負荷變化大，難以確定控制參數；二是要求空調負荷大，而且要控制空調使其降溫迅速：三，不便於用電力作為動力源，必須用汽車發動機或輔助發動機來帶動壓縮機，當採用汽車發動機作為動力源時，由於汽車的車速變化大，發動機轉速的變化可從600r min到4000r min ，壓縮機轉速與發動機轉速成正比，其轉速變化高達7倍，給空調系統製冷劑流量控制帶來困難。By comparing and analyzing the advantages and disadvantages of three kinds of voltage reference circuits, type of current density ratio compensation 、 weak inversion type and type of poly gate work function, a cascode structure of type of current density ratio compensation is chosen to form the core of voltage reference circuit designed in this paper. applying the negative feedback technology, an output buffer and multiply by - 2 - circuits are designed, which improve the current driving capability
然後通過比較和分析電流密度比補償型、弱反型工作型和多晶硅柵功函數差型三種帶隙電壓基準源電路結構的優缺點，確定了電流密度比補償型共源共柵結構作為本設計核心電路結構，運用負反饋技術設計了基準輸出緩沖電路、輸出電壓倍乘電路，改善了核心電路的帶負載能力和電流驅動能力。Yuli brand drive optical network lights and the colourful new torpedo lights product range, is use of new improved power spring - loaded device access by luminous objects bottom cathode metal with top of spring - loaded contacts, contacts larger, use more flexibility, and must change the old generation network light bending of " spring - loaded " installation use error - prone, lean, exposed the defects
"魚利"牌勁光網標燈及彩光新魚雷燈系列產品採用全新改良的電源彈簧接觸裝置，由發光器底部負極金屬片與彈簧頂部接觸，接觸面更大使用更加靈活方便.傾底解決了老一代網標燈彎尾彈簧安裝使用時易偏差、傾斜、外露的毛病。Considering that electromechanical actuator ( ema ) has the feature of being sensitive to the parameter perturbation and load disturbance, being poor in rigidity etc., deep research has been done to the principle and design method of the ema control system by using the robust control theories
針對電動舵機存在的易受參數攝動及負載擾動影響、剛度較差的特點，採用魯棒控制理論，對電動舵機控制系統設計理論及方法進行了深入研究。The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,
基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。My research paper can be divided into five parts : i. practical mathematical models have been derived and equations are also derived ( includes field excitation system, governing system ), which are used in generator three phases short circuit and by adding large loading. ii. simulation of the generator ' s shunt - wound run
發電機組實用數學模型的推導（包括勵磁系統和調速系統） ，並由此推出了用於發電機三相突然短路和突加異步電機大負載模擬的差分方程；並進行了突卸負載、突加負載時調速系統的模擬過程； 2It is discussed that the present harmonic analyzers do n ' t satisfy the requirements of china standard for harmonic measure of quick disturbance harmonic load. the measurement error brought about by the harmonic analyzers adopting ft or fft algorithm is analyzed. a cycle discrete fourier algorithm that should n ' t be effected by aperiodic component is presented, and the results of simulation show that it has higher accureacy
本文對電力系統諧波的測量方法，數據處理及電力牽引負荷對電力系統的影響進行了研究，論述了目前國內外生產的諧波分析儀用於快速波動諧波負荷的測量不滿足國標的要求，分析了諧波分析儀普遍採用的ft或fft演算法所產生的測量誤差，提出了一種不受非周期分量影響的全周波離散傅里葉演算法，模擬結果表明精度好。The system parameters are developed at the same time, and some universal conclusions on the theoretical analysis of pll are reached. then, we have carried on analysis and research to the theory of differential delay ring voltage controlled oscillator ( vco ). on this basis, a improved differential delay ring vco with more efficient loads is described. this circuit has been designed and implemented in 0. 35 m cmos technology
本文還對差分延遲結構環形壓控振蕩器電路進行了深入的分析與研究，並提出了一種基於高質量電阻電路的主從差分延遲結構環形壓控振蕩器，其採用了一種新型的主從差分延遲結構，並用一個更有效、更穩定的負載電阻電路結構來替代vco設計常使用的單個mos管電阻結構，使其系統穩定性有了相應提高。The device can protect start - up status and running status of asynchronous motors by differential protection, over current protection, negative - sequence current protection, zero - sequence current protection, inverse time current protection, under - voltage protection and so on, can measure every kind of electricity, and can process the function of telecontrol, telemetering and telecommunication
其依靠電流差動、速斷、負序過流、反時限、零序過流和低電壓等保護方法實現了片電動機的運行、啟動和自啟動過程進行保護，並實現各種電量的計量，同時具有遙控、遙測、遙信的功能。The programme logic controller is utilized to control the inverter ' s output frequency which accomplishes controlling the velocity of speed - controlling asynchronous moter. the velocity between main asynchronous moter and speed - controlling asynchronous moter is composed by way of the differential planetary gear train, the tranmission system is made to regulate velocity stepless in large scope which succeed in controlling starting progress of load
使用可編程式控制制器對變頻器的輸出頻率進行控制，實現對調速電機轉速的控制。調速電機與主電機的轉速經差動行星輪系的速度合成，可使傳動系統在很大范圍內無級調速，實現對負載的可控起動。So it can be used for single - phase fault identifying. this paper discusses the size of the negative current and the method of analyzing it. numeral simulation shows the feasibility of it
由於負序電流在故障線路和非故障線路上具有顯著差異，故本文也研究了將負序電流作為故障特徵量的可行性。Based on the comparison and analysis of the secondary electron emission coefficient of two kinds of emitter gaas in theory, it is concluded that when primary electron energy is lower the deviation of secondary electron emission coefficient of two kinds of emitter gaas will become smaller, while when primary electron energy is higher the deviation will increase
通過對兩種負電子親和勢二次電子發射材料的二次電子發射系數的理論值進行比較和分析，得出：當原電子入射能量較低時，兩種材料的二次電子發射系數差值較小；當原電子入射能量較高時，兩種材料的二次電子發射系數差值較大，而且隨著原電子入射能量的升高，兩種材料的二次電子發射系數差值也在增大。The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material
本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。The researching result is shown that an electron divided equally trend and an action of bond forming exist in brass atom and zinc atom in brass substtate. so, the electro - negativity equilibrium principle developed by sanderson et al, may be extend to the system such as brass under different conditions. the electro - negativity equilibrium was produced during the process from pure brass and pure zinc to brass - zinc alloy, and the difference of chemical properties between alloy and pure material is great
結果顯示黃銅中銅鋅原子間存在一定的電子「均分」趨勢，使銅鋅原子間存在一定的成鍵作用，可以將sanderson等人提出的「電負性均衡原理」有條件地推廣到黃銅這類合金體系中，正是這種銅鋅形成合金時所產生的電負性均衡，使得黃銅中的銅鋅與單質狀態下的銅鋅相比，在化學性質上發生了差異，且增強了黃銅的穩定性，限制了黃銅中的鋅在鍍液中滲出。The difference in the electrical condition of the terminals " + " and " - " of the dry cell which tends to make electricity flow we describe as a difference of electrical potential
電（子）之所以流動，是因為干電池上正負兩端上的電的狀況有差別所致，對于這種差別，我們稱之為「電位差」 。分享友人