電阻減量 的英文怎麼說
中文拼音 [diànzǔjiǎnliáng]
電阻減量
英文
resistance decrement-
Bismuth ruthenate and silver were selected as conductor phases and the mixture of calcium oxide - alumina - silicon dioxide ( cao - al _ 2o _ 3 - sio _ 2 ) glass and lead oxide - boron oxide - silicon dioxide ( pbo - b _ 2o _ 3 - sio _ 2 ) glass was selected as inorganic binder phases. it was found that, with the increasing of volume fraction of silver and conductor phase, sheet resistivities descend and there are critical thresholds
實驗發現,隨著功能相百分含量的增加,電阻膜層的方阻值逐漸減小,存在兩個臨界閾值,電阻溫度系數偏向正值;功能相中銀百分含量增加,膜層的方阻值逐漸減小,有一個臨界閾值,電阻溫度系數偏向正值。Tensile properties and impact properties measurements were done at room temperature. the volume resistivity of rectangular samples was measured using a zc36 electrometer and a high 240a voltage supply, for samples with a low resistivity level a dt - 9205b digital multimeter was used, silver paint was applied to ensure complete contact between sample and electrodes, namely, to eliminate the contact resistance. the phase morphology of blends was also studied using a jeol jsm - 5900lv scanning electron microscope ( sem )
體積電阻率的測定:當r _ v 10 ~ 8時,製成100 100 4mm板材,用zc36型高阻儀測量;當r _ v 10 ~ 8時,用dt - 9205b型數字式萬用表測試試樣的體積電阻,為了減小接觸電阻對測試的影響,採用銀導電膠將銅片粘接在試樣的兩個端面上,靜置24小時,待銀導電膠凝固,試謝長瓊:熱拉仲對pet / pe / cb復合導電體系形態和性能的影響樣的電阻穩定后再測量。The 1mhz fixed frequency switching allows for tiny external components and the regulation scheme is optimized to ensure low emi and low input ripple. an external resistor sets the full - scale led current, while two digital inputs control on / off and select amongst three levels of brightness. the circuit operates in 1x mode until just above dropout
工作在1mhz固定頻率,採用線性調制模式使輸入紋波大大減小;利用一個外部電阻可以設置滿量程led電流;外接兩個數字信號控制晶元開關並選擇led三級亮度中的一級;具有過溫、過壓/欠壓等保護功能,工作溫度范圍為- 40 + 85 。It was shown that resistance of pore solution ( r ) and resistance of electrochemistry reaction ( ret ) increased with the prolongation of hydration ages but r decreased with the augment of coal stone. can indirectly reflect the hydration degree of cement pastes
研究結果表明,孔溶液電阻隨著水化齡期的延長而增大,但隨著煤矸石摻量的增大而減小;電化學反應電阻隨著水化齡期的延長而增大,且可以間接地反映水泥漿體的水化程度;分形維數值隨著水化齡期的延長而減小,但隨著煤矸石摻量的增大而增大。In order to enhance the precision, this design proposes that temperature - measuring circuit of platinum resistors and software should be employed to carry on adjustment of measured precision ; it also proposes that the interference of the grid can be reduced by the voltage front feed ; and meanwhile it calls for the application of the photoelectric insulation, the over heating protection and alarm so as to enhance the security performance of the system
為了提高精度,本設計還採用了鉑電阻溫度測量電路,並利用軟體對測量精度進行自校準;通過電壓前饋控制減少電網干擾。此外,設計中還加入了光電隔離措施及過熱自動保護和報警功能,以增強系統的安全性能。Eddy current decay method for measurement of resistivity and residual resistance ratio of pure metals
純金屬電阻率與剩餘電阻比渦流衰減測量方法These measures include installation of lightning lines, decrease of the tower grounding resistance as far as possible, the reasonable use of arc suppressing coils and adoption of arresters
處理方法包括加裝避雷線、盡量減低線路桿塔接地電阻值、消弧線圈的合理使用和採用線路型避雷器。Research on surface and grain boundary passivation mechanism obtained effects of surface recombination on crystalline silicon solar cell performance and the theoretical expression of grain boundary recombination velocity. the limit ratio of short - circuit current increment for anti - reflection coating utilization on solar cells was obtained. the crystalline silicon solar cell spectral response, contact resistance and minority carrier lifetime measurement systems were established
鈍化機理研究獲得了表面復合對不同表面摻雜濃度晶體硅太陽電池性能的影響、表面和界面復合速度的理論表達式;研究得到了減反射膜對太陽電池短路電流增量比的極限;建立了太陽電池光譜響應、柵線電極接觸電阻和少子壽命等測試系統。Thermocouple and thermal resistance in power station suit to measure temperature of electric generator groups and auxiliary machine correspond to 300000 and 600000 kilowatt, which can substitute one from import with many advantages as shock - proof, pressure - resistant, long in service, and convenience in maintain etc. the protective tube is processed in a special construction by deep - blind hole technology whose end not be welded to enhance the strength and prolong service life. thermocouple or thermal resistance
本公司生產的電站專用熱電偶阻,適用於我國30萬60萬千瓦等發電機組及輔機的測溫需要,產品安全可替代進口,具有防震耐壓使用壽命長,維修方便,保護管是採用深盲孔技術加工而成,端部不用焊接,提高了保護管的強度和使用壽命,鎧裝熱電偶熱電阻採用彈簧壓著式結構,在運行中保護管與鎧裝熱電偶熱電阻測量端始終保持著良好的接觸,抗震動,減少熱響應時間,鎧裝熱電偶測量端採用絕緣形式,能防止電磁干憂。Sub - c mh - ni power batteries were prepared with excellent electrochemical performance based on the research of the high rate performance at different temperature. the change of temperature, impedance and weight loss was investigated in the process of recycle at high rate. it showed that the discharge time is 5. 9min at 10c and the middle voltage is 1. 05v
三、根據對電池大電流和溫度性能的研究,研製了具有較好電化學性能的動力型鎳氫電池,並分別測試了電池在大電流循環過程中的溫度、內阻、重量和正負極板等的變化情況,以此分析引起電池性能衰減的原因。Methods of calculating the inductor ' s quality factor and inductance are studied. experimental results are analyzed in detail and some results are obtained : quality factor q decreasing with the increase of turns n ; inductance l proportional to turns n2 ; series resistance rs increasing - iv - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ as g - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ with frequency due to skin effect
得出了一些有用的結論如平面螺旋電感的q值隨著圈數n的增加而減小;電感量與圈數n的平方成正比;高頻時,圈數越多,串聯電阻的趨膚效應越厲害,阻值越大等。But the comprehensive properties were improved remarkably. with the addition of carbon nanotubes, the polarization of charging process decreased, the plateau of discharge became flatter and the migration of potential of peaks value of cyclic voltemmograms reduced. for the other hand, the exchange current increased, ohm resistance and electrochemical reaction resistance of the electrodes decreased, the diffusion resistance of hydrogen and the resistance of adsorption decreased, too
摻入碳納米管對儲氫合金電極的容量影響較小,但其電化學性能卻有較大的改善,主要體現在:充電的極化減小,放電平臺更加平穩、循環伏安曲線的峰值電位隨掃描速度增大的遷移量減小,交換電流密度增大,電極的歐姆電阻、電化學反應、擴散電阻和吸附電阻均減小。Results show that the increase of semiconductor - metal phase transition temperature and the decrease extent of resistance is linear to zr ~ ( 4 + ) doping content, while the hysteresis width of vo _ 2 thin film fluctuates with zr ~ ( 4 + ) doping content
實驗結果表明:隨zr含量的增加, vo _ 2薄膜的半導體-金屬轉變溫度和電阻突變數量級呈線性下降,同時,隨摻雜量的增加, vo _ 2薄膜的熱滯寬度的變化規律是先減小后增大。According to the principles of unequilibrium electric bridge, this paper analyses the work features of the three bridge types and based on experiments, shows how to select the bridge types and parametes. to reduce the non - linear errors and avoid centain unusual circumstances in the measurement
從非平衡電橋測電阻原理出發,分析了3種橋式的工作特性,並通過實例說明如何選取電橋的橋式與參數,以減少測量的非線性誤差及避免一些異常情況。Mapping rheogram and analyzing thixotropy of fresh cement paste with different superplasticizers by measuring the rheologic parameters such as shearing stress 、 yield stress and plastic viscosity. using multi - channel isothermal calorimeter together with non - contacting electrical resistivity device, traditional hydration heat testingl and electrical resistivity testing were connected. using temperature - sensitive of traditional hydration heat model and structure - sensitive of structure formation model, instantaneous formation condition of paste structure was described exactly
`採用多通道等溫量熱儀以及無電極電阻率測定儀,將傳統的水化熱測試與電阻率測試結合起來,運用水化熱的熱敏感性與結構形成的結構敏感性,更加真實地描述了水泥漿體初始結構的瞬時形成狀態;系統全面地研究了高效減水劑對水泥水化過程的調控作用;運用微觀測試方法,深入探討了高效減水劑對水泥水化過程的影響。The same with normal metal film, fe0. 3cu0. 7 ( 500nm ) granular film have positive coefficient of temperature. the negative resistance is observed in fexcu ( 1 - x ) granular film under certain condition. this characteristic of negative resistance is weakened or changed to positive with the change of thickness of film, ratio of fe atom to cu atom, anneal, test temperature
N ) fecu顆粒膜月一i特性研究發現,極小電流下電阻測量具有不確定性; fe cu矚00川)顆粒膜己與普通金屬薄膜一樣,具有正的溫度系數; f民c山x顆粒膜在一定條件下存在負阻現象,並且隨顆粒膜厚度、鐵銅原子比、退火條件、溫度的改變分別存在負阻特性的減弱或向正阻特性的轉變。On - line monitoring of hvcb is the precondition of predicting maintenance, is the key element of reliable run, and is the important supplement to the traditional off - line preventive maintenance in fact, the faults are made by hvcb, no matter in number or in times, is over 60 % of total faults so it has determinative importance for improving the reliability of power supply and this can greatly decrease the capital waste used by - dating overhaul in this paper, the inspecting way of hvcb mechanism characteristic is discussed the concept of sub - circuit protector is presented, the scheme that we offered has been combined with sub - circuit integrality monitoring theory, to ensure that it has the two functions as a whole according the shut - off times at rated short circuit given by hvcb manufacturer, the electricity longevity loss can be calculated in each operation, and the remained longevity can be forecast too an indirect way for calculating main touch ' s temperature by using breaker shell temperature, air circumference temperature and breaker ' s heat resistance is improved in this paper, and main touch resistance can be calculated if providing the load current msp430, a new single chip microcomputer made by ti company, is engaged to develop the hardware system of the on - line monitoring device, and special problem brought by the lower supply voltage range of this chip is considered fully
高壓斷路器所造成的事故無論是在次數,還是在事故所造成的停電時間上都占據總量60以上。因此,及時了解斷路器的工作狀態對提高供電可靠性有決定性意義;並可以大大減少盲目定期檢修帶來的資金浪費。本文論述了斷路器機械特性參數監測方法;提出了二次迴路保護器的概念,並將跳、合閘線圈完整性監視和二次迴路保護結合起來,給出具有完整性監視功能的二次迴路保護器實現方案;根據斷路器生產廠家提供的斷路器額定短路電流分斷次數,計算每次分閘對應的觸頭電壽命損耗,預測觸頭電壽命;提出根據斷路器殼體溫度和斷路器周圍空氣溫度結合斷路器熱阻來計算斷路器主觸頭穩態溫升的方法,並根據此時的負荷電流間接計算主觸頭迴路的電阻;在硬體電路設計上,採用美國ti公司最新推出的一種功能強大的單片機msp430 ,並充分考慮該晶元的適用電壓范圍給設計帶來的特殊問題;在通信模塊的設計中,解決了不同工作電壓晶元之間的介面問題,並給出了直接聯接的接線方案。The result indicates that when the air content of the concrete changes from 1 to 4 percent, the polarized resistance of the identical flow electricity time increases along with the increment of the air content, the corrosion current density reduces along with the increment of air content, the chloride ion diffusion coefficient reduces with the increment of air content ; when air content changes from 4 to 6 percent, the rule of the change of the polarized resistance and corrosion current density happens to be the opposite, the diffusion coefficient of the chloride ion increases along with the increment of air content ; when the air content is 4 percent, the rust - resisting property of concrete is best, and so is the impermeability of the concrete
試驗結果表明,混凝土的含氣量在1 . 9 % ~ 4 . 2 %變化時,極化電阻隨含氣量的增大而增大,腐蝕電流密度隨含氣量的增大而減小, cl -擴散系數隨含氣量的增大而減小;當含氣量在4 . 2 % ~ 6 . 4 %變化時,極化電阻、腐蝕電流密度和cl -擴散系數的變化規律則相反;當含氣量為4 . 2 %時,抗鋼筋銹蝕性能最佳,抗滲性最好。 cl -擴散系數與鋼筋銹蝕參數在一定程度上有著良好的相關性,抗滲性的結果較好地反映了混凝土中鋼筋銹蝕的程度,可以用cl -擴散系數評價引氣混凝土的抗鋼筋銹蝕性能。Good ohm contact resistance can make the differential resistance of the laser small and the test results of the lasers, which are produced under the optimal conditions, prove it
製作良好的歐姆接觸可有效減小激光器微分電阻,在最佳工藝條件下製作的激光器樣品的測量驗證了這一試驗結論。Strain gauges work in accordance with the principle of piezoresistive effect : elongation increases, compression reduces the electrical resistance
應變測量元件根據壓敏效應原理工作:當拉伸增加時,壓縮力會使電阻減小。分享友人