負電抗 的英文怎麼說
中文拼音 [fùdiànkàng]
負電抗
英文
negative reactance-
This product is the newest filming technique, the latest achievement of usa electronic magic, it utilizes decomposition principle of electronic material to form a positive negative ions film on the surface of car coating, which has high water repellency and makes the surface of coat has more than 95 % brightness of mirror surface, lt has preeminent performance on weathering resistance, ageing resistance, oxidation resistance static resistance and wear resistance, with the force of charged ions, this product can easy removes the dirt, water drop acid rain and grease on the surface of the film and perennially and effectively protect coat surface, lt is the fourth generation car beauty and protective product which replaces glaze sealing products
本品屬于當今最新的鍍膜技術，屬美國電子工學魔法的最新成果，它利用電子物質的分解原理，在車漆表面生成持有高撥水性的正負離子覆膜，使漆面光亮度可達鏡面光澤的95 %以上，並具有超強的耐候性、抗老化、防氧化、防靜電、耐磨性極好的功能，它利用電離子的力量，可輕松彈去覆膜表面的污垢、水滴、酸雨、油脂等，平時只需清水沖洗，便可立即使之恢復離子效應，達到長期保護漆面的目的，是取代封釉的第四代汽車美容保護產品。Presence of vulcan xc - 72 active carbon powder in the pt / moox / gc composite electrode by electrochemical codeposition made peak potential of methanol oxidation a further negative shift of about 50mv and a further promotion of co - tolerant performance for methanol oxidation
催化劑中vulcanxc - 72活性碳粉的引入即共沉積制備的pt moo _ x c gc電極催化劑甲醇氧化峰電位又進一步負移50mv左右，抗co中毒催化性能又進一步提高。Consumer goods not covered by the ordinance are food and water, pleasure craft and similar vessels, aircraft ( other than hang - gliders ), motor vehicles, gas, liquid petroleum gas containers, gas appliances, gas fittings and flexible gas tubing as defined under the gas safety ordinance, electrical products, pesticides, tobacco and tobacco products, pharmaceutical products, poisons and antibiotics, traditional chinese medicines, toys and children s products within the meaning of the toys and children s products safety ordinance, and any other goods the safety of which is controlled by specific legislation
不在該條例管制范圍內的消費品計有食物及水、遊艇及類似船隻、飛機（滑翔風箏除外） 、汽車、 《氣體安全條例》所界定的氣體、石油氣儲存器、氣體用具、氣體配件及氣體軟喉、電氣產品、除害劑、煙草及煙草製品、藥劑製品、毒藥及抗生素、傳統中藥， 《玩具及兒童產品安全條例》所指的玩具及兒童產品，以及有特定法例負責安全管制的其它貨品。Moreover, we mensurate the reactances of the experimental motor by the way of direct joad method, and verify the vaiidity of " electromotive force method "
文章還運用直接負載法測定出樣機在不同負載下的電抗參數，驗證了「電勢法」的正確性。In this thesis, a kind of reversible immobilization method based on the plasma - polymerized film ( ppf ) used for effective immobilization of active bio - molecules and easy reproduction of sensors is developed. the surface of quartz crystal microbalance ( qcm ) is firstly prepared with plasma - polymerized film of butyl amine by glow - charge technique and then covered with a negative - charged polyelectrolyte by self - assembling. through strong electrostatic attraction, antibodies ( antigens ) positive - charged are immobilized for the determination of antigens ( antibodies )
本論文基於等離子體聚合膜，設計了一種既能固定生物活性物質又易於傳感器再生的可逆固定化方法，即採用輝光放電的等離子體沉積技術，先在石英晶體上沉積一層正丁胺等離子體聚合膜，再在膜上自組裝一層帶負電的聚電解質，用以靜電吸附固定抗體（抗原）測定抗原（抗體） 。Fault location techniques are used to pinpoint location of the fault on a tra - nsmission line. transmission line faults must be located accurately to allow maintena - nce crew to arrive at the scene and repair the faulted section as soon as possible, which can relief the burdens of patrol personnel and reduce the revenue losses due to power outage. the accurate fault location alogrithms play an important role in power system safety, economy and reliability. in this paper, diversified fault location algorithms are summarized. according to the principles of algorithms, they can be classified into two categories : impedence based algorithm and traveling wave based algorithm. based on the analysis and comparission of each algorithm, the corresponding merits and app - lication limitations are presented
精確的故障定位為現場巡線工作人員及時提供準確、可靠的信息，減輕人工巡線的負擔，同時加快線路的恢復供電，減少因停電造成的綜合經濟損失，為提高電力系統運行的安全性、經濟性和可靠性發揮重要的作用。本文總結了現有的各種測距方法，根據測距的原理將其分為阻抗法和行波法兩大類，對各種演算法的優缺點及適用范圍進行了分析，在此基礎上提出了一種組合的測距方案，並對演算法進行了模擬分析。High voltage shunt capacitor installation is comp - rised of capacitor cabinets or steel racks capacitor, special fuses for capacitor overload protection, capaci - tor discharge device, air - cored reactor which is applied to restrain surge current and high frequency harmonic, zno arrester without gaps for overvoltage - limiting and high voltage vacuum switch etc. capacitor cabinet is
高壓並聯電容器成套裝置主要由電容器櫃或鋼架電容器電容器過負荷保護專用熔斷器放電裝置專用放電線圈或電壓互感器，抑制涌流限制高次諧波的空芯電抗器和限制過電壓的無間隙氧化鋅避雷器及高壓真空開關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。This paper discusses the ability of avoiding maximal power flow of quadrilateral impedance relay and round impedance relay in detail and puts forward the setting principle and setting method of load limiting resistor of backup distance protection
本文對四邊形和方向圓特性阻抗繼電器躲線路最大潮流的能力進行了詳細分析，提出了距離保護負荷限制電阻的整定原則和整定方法。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。With the development of the electric power system, static - state reactive power compensators ca n ' t have met the requirements of the actual production and operation, and the trend to the fast and dynamic compensation for reactive power become greater and greater. since ertan hydroplant and 500kv transmission systems in sichuan power system have been operated, many power plants of load center are forced to halt during the high - water period, because the great deal of power is transmitted to far - distance load center. thus the load center loses voltage sustentation and the level of the system stabilization is debased greatly
四川電網的二灘水電站和500kv輸變電系統投入運行后，由於二灘水電站的大量電力遠距離輸送至負荷中心，迫使負荷中心的火電機組在豐水期大量停機，使負荷中心失去電壓支撐，大大降低了電網的電壓穩定水平；同時，因為四川電網中的無功補償裝置全為靜態無功補償電容器（或電抗器） ，這些設備只能在系統正常運行狀態下起到無功補償和電壓支撐的作用，而在電網出現事故時，不但不能起到電壓支撐作用，反而會促使電網電壓崩潰事故的發生。A novel high output resistance current source based on negative resistance
一種基於負電阻的高輸出阻抗的電流源High voltage shunt capacitor installation is comprised of capacitor cabinets or steel racks capacitor, spe - cial fuses for capacitor overload protection, capacitor discharge device, air - cored reactor which is applied to restrain surge current and high freq. harmonic, zno arrester without gaps for overvolage - limiting and high voltage vacuum switch etc. capacitor cabinet is made of highquality cold - rolling steel plate
高壓並聯電容器成套裝置主要由電容器櫃或鋼架電容器電容器過負荷保護專用熔斷器放電裝置抑制涌流限制高次諧波的空芯電抗器和限制過電壓的無間隙氧化鋅避雷器及高壓真空開關等設備組成。The power angle characteristics are acquired and compared with the unsaturated curves. it is concluded that the stability limit of the power angle is less than 90 degree. reactive power regulating curves are calculated and compared with those curves when saturation effect is not considered, the result is that u type curves are deviated to the right
通過對同步發電機各種運行曲線的計算，在已有文獻的基礎上更進一步分析了鐵磁材料飽和以及磁場畸變對同步發電機運行特性和參數的影響；求出了空載特性曲線和零功率負載特性曲線，在不同的電樞電流下計算得到的波梯電抗不同；求出了功角特性曲線，與不計飽和時的功角特性曲線相比較，功角穩定極限小於90 ；求出無功調節曲線，與不計飽和時相比較， u型曲線向右偏移。The effects of the error of ct and vt, hysteresis and load variation to short - circuit reactances are discussed also. by using error analysis and simulation analysis, this paper discussed the feasibility in engineering
論文分析了互感器誤差在幾種情況下對短路電抗測量結果的影響；通過變壓器建模，分析了磁滯特性和負載變化量大小對短路電抗測量結果的影響，驗證了該方法在工程應用上的可行性。In this paper, firstly we analyse the distribution of the magnetic field in the permanent magnet canned motor pump which rate power is 15kw, and calculate the reactive electromotive force, armature reactance parameters of this motor pump with no loads and loads
本論文運用有限元方法分析了一臺15kw稀土永磁同步屏蔽電泵內部磁場的分佈情況，得到了在空載、負載等不同情況下，電泵的氣隙磁密分佈磁場，計算了反電動勢和電樞反應電抗等參數。After the analysis of power produce character of the typical three - phases unbalance load, the corresponding circuit is adopted. this main circuit is composed of the power filter series and tcr control circuit. secondly the theory of band - pass filter is analyzed in detail, and then a method of implementing butterworth band - pass filter is put forward
簡要分析了無功補償的基本原理和工作特點，通過對典型的三相不平衡負載工作特點的分析，主電路採用電力濾波器與晶閘管控制電抗器相接合的結構；對用於無功檢測的帶通濾波器進行了分析，設計了用於負載電壓、電流信號濾波的帶通濾波器，並採用運算放大器加以實現。The equipments and methods were on the level of manual operation, hi this paper, author paid a systemic research into three kinds of measure means : direct current attenuation method, voltage integral method, and direct load method ; theoretically analyzed the measure methods of synchronous armature reaction reactance, and even developed a test system to automatically measure the synchronous armature reaction reactance
作者對直流衰減法、電壓積分法和直接負載法這三種測試方法的測試原理進行了較為深入、系統的研究，從理論上分析了同步電樞反應電抗參數的測試方法，並在此基礎上開發出能夠自動進行同步電樞反應電抗參數測試的系統。Originally from green concrete and concreting in minus - temperature, the critical strength of frozen injury of minus - temperature calcium - enriched fly ash concrete and the rule of strength development are studied in this paper. through the test of resistance of freezing - thawing cycles and chloride diffusivity, the influence of curing system and calcium - enriched fly ash on the performance of concrete are studied ; and through the modern methods ( xrd, sem, and so on ), the hydration products, pore structures and microstructure are studied
本文既著眼于綠色混凝土，又致力於混凝土的負溫施工，研究了增鈣粉煤灰混凝土的抗凍臨界強度及其負溫抗壓強度發展規律;通過快凍試驗和氯離子滲透試驗，研究養護制度和增鈣粉煤灰摻合料對混凝土耐久性能的影響;並通過光學顯微鏡法、掃描電鏡和xrd等現代分析方法，研究負溫增鈣粉煤灰混凝土的水化產物、孔結構和顯微結構。Transformers and reactors ; guide to selection and application of on - load tap - changers
變壓器和電抗器.帶負荷分接開關的選擇和應用指南分享友人