電位降比 的英文怎麼說

中文拼音 [diànwèijiàngbǐ]
電位降比 英文
potential-drop ratio
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  1. In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method

    在數字式保護中，如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增，本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值，以便在提高采樣率的同時降低噪聲誤差的影響，並將其應用於基於32位浮點dsp的新型變壓器保護裝置。
  2. Fos + / th + / gfap + and fos + / vp + / gfap + triple labeled n - asc could be found in the mvz, pvn and son respectively ; ( 2 ) under electronic microscope, the astrocytic processes connected closely with the dendrites or axons of the neurons, where the bilateral membranes became thick. we call transiently it electron - dense areas ( edas ). the number of edas increased remarkably following hyperosmotic stimulation ; ( 3 ) when trace retrogradely, wga - hrp was microinjected into the unilateral son, pvn or nucleus of solitary tract ( nts ) respectively using the stereotaxic method, the n - ascs formed by the neurons triple - labeled with hrp / fos / th ( or vp ) and astrocytes labeled with gfap could be found in the mvz, son and pvn respectively ; ( 4 ) after being treated with heperosmotic nacl solution, intracellular calcium concentration in cultured hypothamic neurons and astrocytes increased and then decreased

    腦內gfap陽性結構也明顯增多，其分佈與fos陽性細胞分佈基本一致，表現為胞體肥大、突起粗長； ast緊密包繞在神經元周圍形成神經元- ast復合體（ n - asc ） ；在mvz 、 pvn和son三重免疫組化染色切片上可見到fos + th + gfap +第四軍醫大學博士學位論文和fos vp gfap三重標記asc ； （ 2 ）免疫電鏡下son內星型膠質細胞突起與神經元樹突或軸突之間接觸部位出現增厚的膜結構一電于緻密區（ edas ） ，高滲刺激后數量明顯增多： （ 3 ）將們個mp注入大鼠一側n卜、卜卜或孤束核（ ws ） ，分別在延髓內臟帶（ mvz ） 、 so和pvn內出現fos hrp th 、 fos hrp八p三重標記神經元和gfap陽性標記ast形成的n asc ； （ 4 ）高滲刺激使培養神經元和ast內鈣水平先升高后降低，最後維持在比高滲刺激前稍高的靜息鈣水平上。
  3. The patch clamp experiment : the cell - attached and inside - out configurations of the patch - clamp techniques were used to investigate single channel properties of nmd a receptors in the actuely dissociated neurons of the marginal division in the rat striatum, recording the current amplitude. long / short term opening / closing times indexes and the effects of incitants and agonists of the nmd a receptors on those parameters. we find that two types of conductance of 42ps and 20ps were recorded, the 42ps was the advantaged conductance

    本研究是在本實驗室以前研究的基礎上，通過膜片鉗（ pachclamp ）觀測sd （ sprague - dawley ， sd ）的mrd上nmda受體通道的電生理特性；繼而對青壯年sd大鼠的mrd 、海馬進行毀損並腹腔注射nmda受體阻滯劑ktm （ ketamine ， ktm ） ，觀察其對大鼠學習記憶能力的影響：對于學習記憶能力下降的老年鼠進一步做顱內定位注射nmda受體激動劑與抑制劑，觀察其在特定部位的作用；最後，應用fmri （ functionalmagneticresonanceimaging ; fmri ）對注射ktm的志願者做學習記憶與痛覺的對比觀察。
  4. Two nonlinear simulation methods are designed by curve fitting method and anfis which seem simply and right in the simulation experiment. based on the model different control strategies also were realized in detail such as chopped current control ( ccc ), angular position control ( apc ), amplitude - change ccc and pi control. a simple torque sharing function ( tsf ) method and a tsf controller were designed which decreases torque ripple effectively

    文章中還建立一種基於模糊神經網路的非線性模型，並對比分析了三種方法，模擬中確定了電機的最優開通關斷角，在此基礎上實現了電流斬波控制、角度位置控制、變幅值電流斬波控制以及分段雙閉環pi控制，模擬結果表明，它實現了電機的正常運行，很好的抑止了電機轉矩脈動，同時有效地降低了噪聲。
  5. In acid copper sulphate solution, the nc copper has a more negative corrosion potential which is decreasing with reducing the grain size and diffusion impedance was only found in the as - prepared and as - annealed at 180 ? nc copper due to the diffusion within the pores and channels on the surface. both the tafel plots and eis study demonstrated that the nc copper exhibits a higher corrosion current and lower polarization resistance than its mc couterpart

    在酸性硫酸銅溶液中，納米晶銅的腐蝕電位比微米晶銅要負，並且隨著晶粒尺寸的減小而降低。 eis研究表明，未退火的和180退火的納米樣品中發現了擴散阻抗，與表面孔洞和通道中的擴散有關。極化曲線外推法和電化學阻抗研究都表明納米晶銅的腐蝕電流比微米晶銅高，而極化電阻要低。
  6. According to pump performance curve shown we can get that the distance h is changed with the rotate speed n in the same point q, and the flux q is changed with the rotate speed n in the same point h. from the curve we can get the rule that the distance and rotate speed are in direct with ratio at the same flux point, and the rotate speed and the flux are also in direct with ratio at the same distance point

    根據相似定律：流量與轉速的一次方成正比；揚程與轉速的二次方成正比；功率與轉速的三次方成正比。即在降低轉速，調低水泵出水揚程的同時，功率下降的幅度非常大，從中可以節省相當大的電能。完全應在高水位時降低水泵機組轉速，從而使電機的輸出功率隨著轉速下降值與轉速原值商的三次方關系下降。
  7. In the third chapter, the influence of current density, solution concentration, erosion time and aging in ambient air on the pl spectra of ps suggests that peak would blue shift with current density increasing, and with erosion time and aging time prolonging ; with the increasing of solution concentration, peaks would red shift when solution concentration less than 1 : 1 but blue shift when solution concentration greater than 1 : 1. above phenomena can be explained by quantum confinement and light center model, but do not deny the action of si - h bonding and defect on the surface in the process of photoluminescence. at present, radiation mechanism is still one of the primary problems in the study of ps

    在第z三章中；通過對比，分析了電流密度、陽極化時間、溶液濃度以及自i然氧化時間對多孔硅光致發光光譜的影響，認為在一定的范圍內，多i孔硅的發光峰位會隨電流密度的增大而藍移，要獲得較強的發光，需z要選擇合適的電流密度；隨著腐蝕時間的延長，多孔硅的發光峰位會i發生藍移；當f酸的濃度較小q ： 1 ）時，峰位隨濃度的增大表現為向i低能移動；而當f酸的濃度較大河山時，峰位隨濃度的增大則表現z為移向高能；多孔硅在空氣中自然氧化；其發光峰位發生藍移，而強i度隨放置時間的延長而降低。
  8. The modified copolymer solution has lower surface tension than the unmodified one. by measuring adsorptive content, we find that the adsorptive content of fdn superplasticizer is higher than the modified copolymers, but their adsorptive shape on the surface of the cement particles is different. measuring of potential of cement particle indicated that higher potential leads to better dispersibility for used superplasticizer

    通過對減水劑的表面張力、吸附量、 5電位研究，發現改性后的減水劑均比未改性的共聚物更能降低水的表面張力；茶系減水劑比合成的減水劑具有更大的飽和吸附量，但彼此的在水泥顆粒表面的吸附形態並不相同：減水劑一水一水泥體系具有雙電層，加了減水劑的水泥膠粒的電負性顯著增加，改性后產物的負電性與改性前相比明顯增加。
  9. According to the documentation collected from domestic and abroad wang wei dong who works in huadong architect and structure institute utilizes the similar work property between the underground continuous wall and pile subjected the vertical loads, and introduces poulos method of elasticity and plastic which applies to pile foundation into the calculation for subsidence of underground continuous wall. pujialiu and yu yuzhou from water and electronic engineering of qinghua university, according to the result of three axes, define the concrete parameter utilize the model of non - linear e - b combined with the design cross section of dam in xiaolangdi, yellow river accept the total stress programme of thepd dam, and we analyze the stress and displacement of plastic concrete diaphragm wall by finite element method in comparison with the result of common concrete one. at same time, we consider the effect of the character of plastic concrete diaphragm wall which is composed of different gradients and adopting the level of stress and pulling stress infers whether the plastic concrete diaphragm wall is safe or not

    地下連續墻是一種歷史較短的施工方法，目前，砼防滲墻的設計還是以傳統的設計方法為主，根據查找國內外文獻資料，華東建築設計院王衛東利用地下連續墻與樁在豎向荷載作用下的工作性能有相似性，將適用於樁基的poulos彈性理論引入對地下連續墻的沉降計算中；清華大學水利水電工程系濮家騮、于玉貞根據三軸試驗結果確定混凝土的參數，利用非線性e - b模型，結合黃河小浪底土石壩設計剖面，採用thepd土石壩總應力程序，對深覆蓋層塑性混凝土防滲墻的應力、位移進行有限元分析，並與普通混凝土防滲墻計算結果加以對比，同時分析了不同配比塑性混凝土特性的影響，並採用應力水平和拉應力數值來判斷塑性混凝土防滲墻的安全程度。
  10. Cu2 +. cr3 + were selected with different weight ratio doping in tio2 to study the photocatalyst modifying in this paper. the experiments of degradation methylene blue showed that the doping results were quantitatively correlated with the transition metal ion radii. their electronic configuration

    對次甲基藍的降解實驗表明摻雜離子的修飾效果與過渡金屬離子的離子半徑、外圍電子構型、氧化還原電位和離子濃度等因素有關，質量比為0 . 5的fe ~ （ 3 + ）摻雜對次甲基藍的降解效率最高。
  11. It adopts 60w radio frequency laser producer and cti mirror system imported from america. the electric scissor lift table realizes precise control of focus. infrared ray - demonstrating aiming device can position the marked object more conveniently. it is a comparatively high - quality marking machine, characterized by its high efficiency and convenience, zero materials, zero pollution, and zero poison. applied fields : marking of many non - metal materials, such as cloth, leather, acrylics, wood, paper, pacage of food, electronics, and medicine, etc

    該機使用美國進口60w射頻激光器和cti振鏡系統，電動升降平臺平實現焦距精確控制，用紅光指示結準器，更方便打標對象的定位，具有高效便捷無需耗材，無毒無污染等特點，是一款性價比較高的標記設備。
  12. 22 paired inferior collicular neurons were obtained in the experiment. the neurons were recorded in the depth of 198 - 1254 u m ( 544. 59 ? 72. 37 n m, m + sd ), and their bfs were 11. 25 - 59. 29 khz ( 26. 77 + 9. 95 khz, m ? d ) : the minimum thresholds ( mts ) werelo - 66 db spl ( 38. 14 ? 14. 39 khz, m + sd ) ; the latencies were 4. 0 - 16. 0 ms ( 8. 19 + 3. 14 ms, m + sd ) ; the best intervals between paired sound pulses were 0. 01 - 28. 71 ms ( 3. 93 + 2. 52 ms, m ? d ) 0 the results showed : l ) there were interactions between the neurons in the iso - frequency lamina and hetero - frequency lamina which included mutual inhibition ( 18 / 22, 81. 8 % ) and mutual facilitation ( 4 / 22, 18. 2 % ), and the mutual inhibition in iso - frequency lamina was stronger than that in hetero - frequency lamina ; 2 ) the mutual inhibition decreased with sound level increasing ( p < 0. 001, anova ) ; 3 ) the analysis of the inhibition of discharge rate at lodb above mt showed that the inhibition increased when the paired neurons " bfs difference decreased ( r = - 0. 545, p = 0. 0006 ) ; 4 ) the mutual inhibition of paired neurons can sharpen the frequency tuning and the effect increased when the frequency was away from the bf ; 5 ) the changes in q10, q30 decreased with bfs difference of the paired neurons increasing ; 6 ) the mutual facilitation between paired neurons not only increased discharge rate, but also widened the frequency tuning, i. e., increased response frequency

    結果表明： 1 ）同頻層神經元之間或者非同頻層之間神經元之間存在相互作用，這種作用既有相互抑制（ 18對，佔81 . 8 ） ，也有相互易化（ 4對，佔18 . 2 ） ，且同頻層神經元之間的相互抑制作用較非同頻層神經元之間的相互抑制作用要強； 2 ）神經元對低刺激強度反應時，所受到的相互抑制作用較強，隨著聲刺激強度加大，抑制作用逐步降低（ p 0 . 001 ， anova ） ； 3 ）對閾上10db放電率抑制百分比進行的分析顯示，配對神經元之間的最佳頻率差越小，相互抑制作用越強（ r = - 0 . 545 ， p = 0 . 0006 ） ； 4 ）配對神經元之間通過相互抑制作用可表kx碩士學位論文waiaster 』 sthesis現出調諧銳化作用，該作用的效率與頻率有關， bf處的銳化作用較低，偏離bf時其銳化作用逐步加強； 5 ）頻率銳化作用的效率與bf差有關，隨著配對神經元之間的bf差擴亢q10 ， q30值的變化逐漸減小，其變化百分比與配對神經元之間的頻率差存在明顯相關； 6 ）配對神經元之間的相互易化作用不僅表現在放電率增加上，也表現在頻率調諧曲線的擴寬，即頻率響應范圍擴大。
  13. At the same time, the method of disposal phase shift of ct by compensation is introduced. then the analysis and statistic of electrical power quality, the control scheme and compensating amount of capacitor for reactive power compensation are analyzed respectively. and in the paper, the control with a / y and the switch with ac contactor and solid state switch is valid measure not only for improving operate level economically and amending electrical power quality but also for avoiding of replacing switch frequently and decrease economic loss

    然後對現有的演算法進行了詳細的分析、比較，篩選出既能滿足硬體要求又可降低投資、保證精度、簡化軟體的方案，確定了準同步采樣的方案，並通過對準同步采樣誤差的分析，提出了一種從45開始采樣，從而提高精度的采樣數據處理辦法，同時，對于電流互感器相位漂移提出了一種補償辦法，接著對裝置中電能質量分析與統計以及無功補償中電容器的補償量、投切原則也作了相應分析，其中對于無功補償採用y混合接線，並利用交流接觸器和固態開關共同投切電容，不但提高了經濟運行水平、改善了電能質量，而且有效的避免了頻繁更換開關，減少了經濟損失；最後，設計了裝置的硬體電路並繪制了相應的軟體流程圖。
  14. Compared with other materials, polymers have many advantages such as low cost, easy fabrication, better fixation to the sensing polymer film, and the potential for integrating with a to or eo modulator for a fine tuning of phase

    與其它光波導材料相比，聚合物降低了材料及器件的制備成本；對聚合物敏感層具有相對更好的固定作用；有利於在傳感器上同時集成調制器（電光、熱光）進行相位微調。
  15. The optimized experimental conditions are determined and the densities of some elements in the mental alloy standard samples are measured. the experimental results shows that the spectral intensity of the plasma enhances significantly with the increase of the operating voltage and the power density. ( 1 ) to the steel ally sample, the emission intensities of the spectra reach to the maximum values when the laser operating voltage is 1600v and the argon pressure is 600 torr. under the same pressure, the spectral intensity of the plasma in the argon atmosphere is stronger than that in the air. when the argon pressure is 320 to rr, the signal - noise ration is about 5 times than that which the argon pressure is 700 torr, but the temperature of plasma is less about 1000k

    （ 1 ）對于光譜標鋼準樣品，當激光器工作電壓為1600v 、氬氣壓力為600乇時，譜線強度達到最大，並且在相同壓強下，氬氣中的等離子體與空氣中的等離子體相比，其輻射強度明顯增強；氬氣壓力為320乇時的譜線信背比約為600乇條件下的5倍，而等離子體溫度卻下降了近1000k ，即等離子體溫度隨環境氣壓的增大而增大；當激光束的焦斑在樣品表面上下移動時，激光誘導量、等離子體的激發溫度、譜線強度都呈不對稱性分佈，其最大值對應的焦斑位置都位於樣品表面之下0 . 4mm左右。
  16. Through adjusting the controlling fuel injection - - regulations of the two injection timings and proportions, an adequate air and fuel charge stratification was produced - we call it quasi - homogenous mixture and the lean burn was successfully realized in a product 4 - valve s. i. engine whose structures are n ' t changed at all. investigations show that twice electronic fuel injection can make the lean limit ( a / f ) increase by 1. 5 - 2 units ; the fuel consumption and exhaust emissions are improved remarkably, in partial load, compared with the product 4 - valve s. i

    研究結果表明：兩次噴油可拓展發動機稀燃極限1 . 5 - 2個空燃比單位，最高達23 . 5 ；發動機燃油消耗同原電噴發動機相比可降低19 . 1 % ；整個空燃比范圍內，經過優化的兩次噴油稀燃的最低油耗較單次噴油稀燃下降6 . 5 %左右，各種排放物機內生成量均有大幅度下降。
  17. Synthetic analyze that effect of nd2o3 on improving potential gradient is the most outstanding, effect of la2o3 is more outstanding and that of ceo2 is the inferior. adding appropriate amout nd2o3 improves remarkably potential gradient, at the same time decrease leakage current and voltage ratio, that results in zinc oxide varistor with excellent comprehensively performance

    綜合分析， nd _ 2o _ 3提高壓敏電位梯度的作用最為顯著， la _ 2o _ 3次之， ceo _ 2最弱，並且適量的nd _ 2o _ 3在顯著提高壓敏電位梯度的同時，可降低漏電流和壓比，使壓敏閥片具有優良的綜合性能。
  18. Electric discharge characterized by a cathode fall that is small compared with that in a glow discharge

    與輝光放電相比，陰極位降相對較低的放電形式。
  19. In this paper, we present a new type of multi - functional three - phase watt - hour instrument, based on high - performance avr 8 - bit microcontroller, and integrated the functions of protection, communication, measurement and control. asic ade7758 is adopted to replace data - collecting hardware circuit. compared with the traditional method, it not only simplifies the system structure, decreases the cost, but also improves system reliability and accuracy

    本設計所研製的多功能電力監控儀以高性能低功耗的8位avr單片機為核心，集測量、控制、保護和通信於一體，採用ade7758取代了采樣硬體電路，相比傳統的設計方法來說，這不僅大大化簡了外圍電路，降低了成本，而且提高了設備的精度和可靠性。
  20. The results showed air electrode ( 1cm2 ) which had been optimized exhibited good performance that short circuit current of aluminum / air battery was as high as 380ma and the polarization potential was diminished from 0. 259v to 0. 212v at 60ma / cm2 when the concentration of salt electrolyte was 2mol / l

    以2mol / l的食鹽溶液為電解液，採用優化工藝制備的空氣電極為陰極（ 1cm ~ 2 ） ，鋁合金為陽極，測得電池的最大短路電流超過380ma 。在電流密度為60ma / cm ~ 2時，極化電位為0 . 212v ，與優化前所制備的空氣電極相比，極化電位降低20 。
分享友人
分享到 Line

分享到臉書