electric density 中文意思是什麼

electric density 解釋
電荷密度
  • electric : adj. 1. 電的；帶電的；起電的，導電的，發電的，電動的。2. 令人激動的，緊張的，驚人的。3. 〈美口〉（樂曲的）用電吉他演奏的。n. 〈口語〉1. 帶電物體。2. 電動車輛。
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  1. The main work and achierement are as following : ( 1 ) by using shock impedance matching technique and electric probe method, 5 shots of impact experiments were conducted to measure the hugoniot equation of state for enstatite ( mg0. 92, fe0. 08 ) sio3 with the average initial density 3. 05g / m3 from shock pressure 50 gpa to 115gpa, using two stage light gas gun

    本文研究取得的認識主要有以下幾點： （ 1 ）用阻抗匹配法和電探針技術在80 115gpa壓力范圍內對平均初始密度為3 . 05g / cm ~ 3的頑火輝石樣品進行了5發hugoniot狀態實驗測量。
  2. By using the multi - configuration dirac - fock ( mcdf ) method, the effects of relaxation and correlation on the transition energies and probabilities of electric - dipole allowed ( el ) resonance and intercombination transitions for 2p53s3 - 2p6 in neutral neon have been systematically studied firstly. and the results of the transition energies and probabilities ( lifetimes ) in length and velocity gauge have been presented. during the calculation, in order to consider the rearrangement effects of the bound - state density and some important correlations, the asfs of transition initial - and final - states were divided according to their angular - momentum and parity and calculated, and different number of csfs were included in the expansion of asfs

    本文利用多組態dirac - fork （ mcdf ）理論方法，通過對輻射躍遷初、末態電子波函數的獨立計算以及在原子態波函數的展開中考慮不同數量的組態波函數，系統地研究了弛豫和相關效應對中性ne原子2p ~ 53s ~ （ 1 . 3 ） p _ 1 ~ o - 2p ~ 6 ~ 1s _ 0電偶極共振和復合躍遷的能量以及躍遷幾率的影響，給出了長度和速度兩種不同規范下激發態的能量和輻射壽命；以中性ne原子的研究為基礎，進一步研究了類ne等電子系列離子（ z = 11 - 18 ）較低的激發組態2p ~ 53s和基組態2p ~ 6的能級結構以及各能級間的輻射躍遷特性。
  3. According to basic principle and application experience of black light lamp, the trapping lamps were opened out using the principle of wave, color and taste to trap insect pests imago with the electric networks of frequently vibration and high voltages, it can trap many species and amounts of insect pests, reduce amounts of field ovum, greatly reduce insect pests density, save energy, have low lost, little harm to natural enemy and persons and livestock, have remarkable economic, ecological and social efficiency

    摘要借鑒黑光燈的基本原理和應用經驗，再配以頻振高壓電網觸殺的頻振式殺蟲燈，誘集的害蟲種類多、數量大，既大幅度降低了田間落卵量，又顯著減少了蟲口密度；節能省電，成本低；葉昆蟲天敵殺傷力較小，對人畜安全，不污染環境，具有顯著的經濟、生態和社會效益。
  4. In such cases, any local bunching of particles causes a large unshielded electric field unless the density is extremely low.

    在這種情況下，除非密度非常低，任何粒子的局部集中都會引起末被屏蔽的強電場。
  5. In this paper, based on the amplitude transport equation of fast varying field and the low frequency disturbance equation of electr on density, the evolutions of the density distribution of charged particles and the collapse of electric field have been calculated numerically in two dimensions with three field components under the condition of transverse wave

    所以本文採用了ftcs有限差分格式方法，利用二維三分量軸對稱，對空間飛行體與壓縮區內等離子體非穩態相互作用過程進行數值模擬，得到了電荷密度擾動與電場的變化情況。
  6. The electric current density vector field also satisfies superposition principle, some applications thereof are introduced

    摘要電流密度矢量場也滿足疊加原理，給出了一些應用電流密度場疊加原理的例子。
  7. The aim of this study is to explore the concentrating effects of both the electric current density and the stresses in the plate due to the existence of the elliptic hole

    其研究重心是定量計算橢圓孔對電流密度以及板內應力分佈在橢圓長軸端點處的集中效應。
  8. We also studied the dynamic characteristics of cf / cu ( c ) - cu composites, the results show that, by the method of graphite is coated with copper, the coefficient of friction and the wear rates remarkably decreased. with the increase of the copper coated carbon fiber content, the wear rates of cf / cu ( c ) - cu composites is notably decreased, while the coefficient of friction is increased. with the increase of electric current density, the wear rate of cf / cu ( c ) - cu composites is increased

    研究發現，碳纖維鍍銅石墨-銅復合材料的電摩擦磨損性能與碳纖維含量存在一最佳值，當碳纖維含量為0 . 6時，其電摩擦磨損性能最好；對于不同電流密度下的電磨損性能的比較可以發現，通電磨損時的電摩擦系數要小於機械磨損時的摩擦系數，碳纖維鍍銅石墨-銅復合材料的電摩擦系數隨電流密度增大先減小而後增大，在電流密度為15a cm ~ 2時達到最小值；通電磨損量要遠大於機械磨損量，且隨著電流密度增大，磨損量增加。
  9. Advanced rechargeable lithium ion batteries are attractive for use in consumer electronic and electric vehicle ( ev ) application because of a favorable combination of voltage, energy density, cycling performance, self - discharge ratio and environmental protection

    鋰離子電池以其工作電壓高、能量密度大、循環壽命長、自放電率低、 「綠色」環保等眾多優點備受人們關注。
  10. Coil tightly the stainless steel radiator wing around the electric heating pipe to enlarge the radiating area of the heating tube surface and the heater radiates more quickly, have higher heat use rate and the power density of the heater will be improved. structure sketch

    分體機用翅片加熱器，是電加熱管上緊密繞制不銹鋼散熱翅片，它增大了加熱器表面的散熱面積，使加熱器散熱更快，熱利用率更高。
  11. A study on two - dimensional electric field strength and current density in electrostatic precipitator

    芒刺電極分佈密度與電暈電流的關系超高壓脈沖靜電除塵器
  12. Bipolar battery has the following advantages : compact structure, high energy density and high power density. it can better meet the requirement of hybrid electric vehicles. in this thesis, we focus on the problems that appear during battery design and manufacture

    雙極性mh / ni電池是一種具有疊層結構的新型電池，這種電池內部沒有專用連接體，具有結構緊湊、比能量高、比功率高等優點，因而更適合於混合動力車的使用。
  13. Electric cartridge - type heating elements, with high watt density, metal - sheathed ; dimensions

    金屬殼管式大功率電熱元件.尺寸
  14. Dry ramming material selects synthetic raw material and additive. it is noted for high density, easy for sintering and building, which is idel materials for hp, uhp electric stove

    乾式搗打料是選用合成原料及添加劑製成的，具有抗鋼水滲透性強、易燒結、堆積密度高和施工方便等特點，是hp 、 uhp電爐爐底使用的理想材料。
  15. Reasonable matching of wafer and wire : the advanced matching of wafer improves average voltage in electric field and current density of wafer corona, which the dedusting efficiency is higher

    板線匹配更合理。先進的板匹配，有效地提高了電場平均電壓和板電暈電流密度，收塵效率更高。
  16. We have made three - dimension electric conduct grid by hand and we have successfully used it as anode grid in lead - acid battery. this kind of three - dimension electric conduct grid can improve the utilization of pam by 7 - 9 % in different discharge current density and can reduce the plate electrochemical impedance to one tenth of the normal plate. also this kind of grid can improve the marginal reaction current density in a certain degree

    我們通過手工製作了三維導電體板柵，並成功的應用於電池的正極作為正極的板柵，這種三維導電體板柵能夠在各種不同的放電電流密度下提高正極活性物質利用率7 9 ，能夠使電池正極板的電化學阻抗降低到普通板柵的1 10左右，使正極板的極哈爾濱j _程大學碩十學位論文限反應電流密度略有所提高，但是這種板柵的耐腐蝕性能很不理想，使得所製作電池的壽命很短。
  17. Static - electric field of spindt cathode was analyzed and then field emission current was simulated. the method could direct the fabrication of spindt cathode. how the aspect ration and site density of cnts effect the field enhancement factor were also analyzed

    對碳納米管的頂端電場進行了計算，分析了其長徑比和生長密度對電場增強因子的影響，進而可以對場發射實驗進行指導。
  18. Method for measuring the density of the fine wire and ribbon of tungsten and molybdenum used in electric light sources and vacuumtubes

    電真空器件及電光源用細鎢絲鉬絲和薄帶密度的測試方法
  19. Method for measuring the density of the fine wire and ribbon of tungsten and molybdenum used in electric light sources and vacuum tubes

    電真空器件及電光源用細鎢絲鉬絲和薄帶密度的測試方法
  20. We have investigated transport properties of electrons in magnetic quantum structures under an applied constant electric field. the transmission coefficient and current density have been calculated for electron tunneling through structures consisting of identical magnetic barriers and magnetic wells and structures consisting of unidentical magnetic barriers and magnetic wells. it is shown that the transmission coefficient of electrons in a wider nonresonance energy region is enhanced under an applied electric field. the resonance is suppressed for electron tunneling through double - barrier magnetic ( dbm ) structures arranged with identical magnetic barriers and magnetic wells. incomplete resonance at zero bias is changed to complete resonance at proper bias for electron tunneling through dbm structures arranged with different magnetic barriers and magnetic wells. the results also indicate that there exist negative conductivity and noticeable size effect in dbm structures

    對磁量子結構中電子在外加恆定電場下的輸運性質進行了研究.分別計算了電子隧穿相同磁壘磁阱和不同磁壘磁阱構成的兩種磁量子結構的傳輸概率和電流密度.計算結果表明，在相當寬廣的非共振電子入射能區，外加電場下電子的傳輸概率比無電場時增加.對于電子隧穿相同磁壘磁阱構成的雙磁壘結構，共振減弱；對于電子隧穿不同磁壘磁阱構成的雙磁壘結構，無電場作用時的非完全共振在適當的偏置電壓下轉化為完全共振，這時的電子可實現理想的共振隧穿.研究同時表明，磁量子結構中存在著顯著的量子尺寸效應和負微分電導
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