極低電位 的英文怎麼說
中文拼音 [jídīdiànwèi]
極低電位
英文
very low potential-
The very low electrode potential of lig is an another important reason for the good electrochemical performance of li - ion secondary batteries
嵌鋰石墨大量用做鋰離子二次電池另一個重要原因就是嵌鋰石墨具有非常低的電極電位。Application of caving mining technology with bottom under condition of flat dipping mid - thick body and unstable rock caused the most of trench and bottom drift, located in abutment, to be destroyed and low recovery in south area, xishimen iron mine
摘要在緩傾斜中厚礦體底板巖性不穩固的條件下，採用有底柱崩落法，由於電耙道大多處于空區邊部應力集中的部位，致使塹溝及底部結構巷道破壞嚴重而使回收率極低，採用無底柱崩落卸壓則可有效解決上述難題。The result shows that with the addition of rare earth elements, ultrasonic irradiation and magnetic field, the chemical component, surface configuration, microstructure and properties of electroless co - ni - b and co - fe - b alloy changes remarkably. such kind of change can be described as the followings. firstly the depositing speed of electroless alloy bath is raised while the polarizability and cathodic overpotential are reduced ; secondly the surface quality of the alloy coating and adhesion of the coating and matrix are improved ; thirdly in the coatings the content of the elements in the transient group increases, but the content of cobalt decreased ; fourthly the amorphous structure is transformed to microcrystal structure and polycrystal structure ; fifthly the microhardness and wear resistance of the coating are enhanced ; sixthly coercitive force is reduced, and magnetoconductivity of the coating is increased ; lastly the magnetic intensity of the coating increases with the addition of energy and light rare earth elements such as ce, la and decreases with the addition of heavy rare earth elements such as y. on the other side, when the alloy coatings passes through the heat treatment under the temperature of 250 or 500, their properties will change
結果顯示化學沉積co - ni - b 、 co - fe - b工藝在稀土元素（ ce 、 la 、 y 、 dy ） 、能量（超聲波、磁場）介入后，沉積過程、合金成分、鍍層形貌結構和性能都有顯著變化，表現在：鍍液的陰極極化過電位和極化度降低，沉積速度提高；鍍層的結合力、表面質量改善；鍍層中過渡族元素的含量增加，輕元素硼的含量降低，同時證實了稀土元素與過渡族元素共沉積的可能性；鍍層的顯微結構由非晶態向微晶和多晶態轉變；鍍層的顯微硬度與耐磨性提高，力學性能優化；鍍層的矯頑力降低；磁導率提高；鍍層的磁化強度在能量（超聲波、磁場）和輕稀土元素ce 、 la介入后提高，重稀土元素y介入后降低。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。The optimal cp potential shifted to negative direction in seamud containing active srb, - 1030 mv ( vs. saturated cu / cuso4 electrode, cse ) or lower potential was needed. accordingly, the cp current density was about 11 ma / m2
在srb存在下，最佳陰極保護電位移向更負的值， - 1030mv （相對銅/硫酸銅電極， cse ）甚至更低的電位是需要的。在- 1030mvcse保護電位下，保護電流密度約為11ma / m2 。Because central potentials of four y windings in 12 - phase generator are not equal each other and there is no common reference inside the generator, it is difficult to identify the on / off of rectifying elements. in this paper, by using a mathematical model with line voltage substitute for phase voltage, the problem that there is no common reference in the 12 - phase generator with rectifier is solved. based on results of the studies on small prototype, 920kw charging generator applied in a submarine is improved in design, and therefore power oscillation with high magnitude when two generators are operating in parallel
由於十二相發電機中四個y繞組的中點電位不等，電機內部沒有公共參考點，從而在判斷整流元件導通時，不能象三相同步發電機整流系統那樣認為陽極電位最高或陰極電位最低的整流元件導通，本文採用了以線電壓代替相電壓建立十二相整流發電機的數學模型，從而解決了十二相發電機無公共參考點的問題。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。Under the condition of ead generation, the low and high membrane level - 25 and - 55mv of voltage were clamped during the repolarization phase of action potential. on low membrane level of - 25mv, a slow inward current similar to
在低鉀灌流並伴有ead的情況下，于動作電位復極相的低及高電位處- 25與- 55mv分別進行電壓鉗制。Dr is made of microwave ceramic with high dielectric constant and very low loss. using dr, the phase noise of an oscillator could be made to be extremely low
介質諧振器（ dr ）由高介電常數、低損耗的微波陶瓷材料製作而成，它能極其容易地實現微波頻率源的低相位噪聲。A modified definition of polarization resistance calculated from the equivalent circuit of eis make its value dependent on the grain size. in anodic polarization test ( sweeing and stair - steps ), the maximum ( critical ) current density increases while the passivation potential and breakdown potential lowers with the reduction of the grain size. fegsem images showed the grain growth and pitting corrosion of the nc copper surface, uniform corrosion in the mc copper surface and the broken passivation layer in both surfaces
在陽極極化實驗（包括掃描法和臺階法）中，致鈍電流雖晶粒尺寸減小而增大，而致鈍電位和擊穿電位都隨著晶粒細化而降低。 fegsem照片發現了納米晶銅的晶粒長大和孔蝕，微米晶銅表面的均勻腐蝕，和兩種銅表面破碎的鈍化膜。Its catalytic current was linear with the concentration of h2o2. most of interference was effectively eliminated and the inactivity of hrp under the too low potential to catalytize the reduction of h2o2 was avoided due to the enhanced potential of nr by zp in the composite film. while the silver colloid in the composite film enhanced the capability of zp to adsorb nr and prevented effectively nr from leaching off
4 、上修飾電極與辣根過氧化酶相耦合製成酶電極，顯著的催化了過氧化氫的還原，磷酸鋯提高了中性紅的氧化還原電位，大大的降低了測定的干擾，並有效的避免了辣根過氧化酶在過低的還原電位下失效，納米銀增強了膜對中性紅的吸附，有效的防止了其流失。Simulation results show that cathode over - potential under low current density is considerably increased because of methanol crossover, but its effect becomes much lower under high current density
模型顯示在低放電電流密度下，甲醇穿透顯著地增加了電池陰極過電位，降低了電池電壓；但在高電流密度下，甲醇穿透對電池性能的影響不顯著。Cyclic voltammetry ( cv ) and linear scanning microscopy ( lsv ) results show that the anode reactive rate is limited at low electrode voltage for electro - oxidation of methanol, formaldehyde or formic acid, the over - voltage being about soomv
循環伏安和線性掃描曲線表明甲醇，甲醛和甲酸在低陽極電位下反應速率有限，存在約300mv的過電位。Mol l, artemisinin can be reduced via the hemin - catalysis and its original cathodic peak at - 1. 08v completely disappeared. the cathodic overpotential of artemisinin is decreased ca. 600mv. this process is verified by the fact that complex edta - fe can also promote the artemisinin reduction with decreasing the cathodic overpotential of artemisinin for 590mv. these results show that the reduction of artemisinin at the glassy carbon electrode is a catalytic process with the aids of hemin. hemin can greatly decrease the cathodic activation energy of the reduction of artemisinin and promote the decomposition of artemisinin
Mol l氯化血紅素存在下，青蒿素仍可被催化還原，陰極過電位降低了600mv 。配合物edta - fe具有類似氯化血紅素的催化性質，它降低了qhs陰極過電位590mv 。在這個體系中，青蒿素在碳電極上的還原是一個藉助于氯化血紅素催化的還原過程，氯化血紅素的存在降低了青蒿素還原活化能，促進了青蒿素的分解。Though membrane time arises to the antiseptic efficiency by way of reducing and corroding the density of the electric current and increasing the resistance of polarising to corroding the influence of the electric potential by oneself not big in advance
雖然預膜時間對自腐蝕電位的影響不大，但通過降低腐蝕電流密度和增大極化電阻的方式也起到了防腐功效。1. boron - doped diamond ( bdd ) electrodes have recently attracted considerable interest, especially for electrochemical analysis due to its outstanding characteristics : ( 1 ) very low background current density ; ( 2 ) a wide potential window in aqueous solution ; ( 3 ) good activity toward some redox analytes without any pretreatment ; ( 4 ) long term response stability
1 .硼摻雜金剛石（ bdd ）電極具有較低的背景電流、無需作任何處理的情況下對一些氧化還原分析物有好的活性、高電化學穩定性、寬的電位窗口和長時間的響應穩定性等優點，研究了一些活性物質在bdd電極上的電化學性質。Ir - ta - ti metal oxide coated titanium anodes of variable composition were prepared by thermal decomposition. their micro morphorogies and electrochemical properties were characterized by scanning electron microscope, open circuit potential, cyclic voltammetry, consumption rate measurements and accelerated life test. the sem results indicated that all coatings were of a porous and cracked - mud microstructure influenced greatly by the composition of coatings. the electrochemical measurements showed that the ir - ta - ti ternary oxide - coated anodes exhibited excellent electrochemical activity and electrochemical stability in both acidic media and seawater which were affected by the composition and microstructure of the coatings. owing to good corrosion resistance and low consumption rate in seawater, metal oxde coated anodes belong to insoluble material, and can be potentially applid in impressed current cathodic protection systems as an anode
採用熱分解方法在鈦基體上制備銥鉭鈦金屬氧化物陽極，用掃描電鏡對陽極塗層顯微形貌進行分析，通過強化電解壽命試驗、開路電位測試、消耗率試驗及循環伏安曲線研究了金屬氧化物陽極的電化學性能. sem分析結果表明銥鉭鈦金屬氧化物陽極塗層呈現多孔多裂紋形貌結構.隨陽極塗層組成不同，塗層顯微形貌表現出很大差異，這種差異直接影響陽極電化學性能.電化學性能試驗結果表明銥鉭鈦金屬氧化物陽極在酸性介質和海水中具有良好的電化學穩定性和電化學活性.此外，銥鉭鈦金屬氧化物陽極在海水中的消耗率很低，屬于不溶性的陽極材料，作為外加電流陰極保護用輔助陽極具有廣泛的應用前景Using l - sx - ew technology to treat low - grade copper ore, which can produce high quality 1 # cathode copper
摘要採用浸出萃取電積工藝處理難選低品位銅礦，可產出高質量的1 #陰極銅。To design multistage depressed collectors. to classify electrons by their speeds, electrons with high energy are collected by low potential and those with low energy collected by high potential ; to try to avoid second electrons " emission. besides those air pump system was introduced briefly. 4
將電子按速度分類，高電位收集動能小的電子，低電位收集動能大的電子，使收集極幾乎不消耗能量，同時盡量避免二次電子的發射，保證行波管的工作穩定性，此外還簡單介紹了下氣體電動態系統。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