電標量勢 的英文怎麼說
中文拼音 [diànbiāoliángshì]
電標量勢
英文
electric scalar potential-
It ’ s often used to cover the special target in special area or is used to make false attacking situation. these small light and cheap jamming devices always are thrown to the area near the target. they are manipulated or not to jam the foe ’ s military electronic device such as radar and radio etc. the device weighs about one kilogram and is as big as mauley
分散式干擾是在無人機機載和氣球載干擾機等形式上發展起來的電子對抗設備，通常是為了掩護特定區域的目標或在某一地區內製造假的進攻態勢，將眾多體積小、質量輕、價格便宜的小型干擾源散布在接近被干擾目標的空域、地域上，自動地或受控地對選定的軍事電子設備進行干擾。The analysis results show that : the frequency characteristic curve assumes the downtrend, so the electrical energy measurement of the induction meter will produce biggish error when the content of the harmonic is big, no matter taking the whole energy as measurement standard or basic wave energy
研究分析結果表明：感應式電能表的誤差頻率特性曲線呈迅速下降趨勢，因此在電能計量中，不管是以全能量為計量標準還是以基波能量為計量標準，當諧波含量較大時對感應式電能表的電能計量將會產生較大的影響。The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。Considering the developmental trend of the video compress and the demands of the people, this paper makes researches on the visual section of the mpeg - 4 standard, present an amendment to the ds search algorithm, and does some optimization to the module of compress which is utilized frequently by the encoder so that the encoder can accomplish real - time compression on adsp - blackfin535 evm board to the cif picture, the size of which is 352 by 288
因此，研究mpeg - 4視頻編碼標準並實現實時編解碼具有重要意義，特別是在圖像質量和實時性方面要求都很高的場合，例如電視會議、視頻電話和iptv等。本文結合這種需求和趨勢，研究了mpeg - 4sp編碼原理，改進了ds演算法。通過內存優化、結構優化和匯編級優化，最終實現了編碼器在adsp - blackfin535評估板上的實時編碼。Test method for determination of manganese in manganese ores by pyrophosphate complexed permanganate potentiometric titrimetry
用焦磷酸絡合高錳酸鹽電勢滴定分析法測定錳礦石中錳含量的標準試驗方法Here are some references for nrqcd & nrqed : renormalization group scaling in nonrelativistic qcd on the multipole expansion, the qcd heavy quark potential to order v * * 2 : one loop matching conditions on matching calculations
11下面是非相對論性量子色動力學和非相對論性量子電動力學的一些參考資料：關于多極展開的非相對論性量子色動力學中的重整化群定標，關于匹配計算的v * * 2階的量子色動力學重夸克勢：單圈匹配條件。The main research aspects are as follows : the method of ac transport losses measurement in ac applied magnetic field was investigated. upon the analysis of ac loss measurement, a method to measure ac transport losses in ac applied field was proposed by use of double " 8 " shape coils. a programme controlled system was set up to measure ac losses of hts tapes and coils, which can ensure the experiment data needed by theoretical analysis and verification
主要包括：在實驗方面，探討了交流背景磁場下高溫超導帶材的交流傳輸損耗的測量問題，通過對交流損耗測量的理論分析，提出了採用雙「 8 」字形電勢引線測量交流背景磁場下高溫超導帶材交流傳輸損耗的方法；建立了超導帶材短樣及線圈交流損耗的電測量系統；從而為交流損耗的研究提供實驗數據與理論檢驗標準。Due to the fact that the associations of the electrical alloy industry and the insulating material industry of china have their offices on the glesi premises since 1970, guilin coninst has always been able to follow the research and development, production, application, testing and standardization of foreign advanced companies and to maintain technical exchange with the foreign counterparts. guilin coninst carries out national and military research projects every year, and has transferred several research achievements into new products in scale production. with a strong technical force, guilin coninst has always been the leader in the contact material field of china and is the only chinese company manufacturing the whole series of contact materials for low voltage, high voltage and vacuum applications
自1970年以來，公司依託桂林電器科學研究所在電工合金和絕緣材料兩個行業的技術歸口管理優勢，長期跟蹤國外先進企業的研發生產應用檢測和標準化技術，保持與國際同行的技術交流，每年承擔國家多項科研及軍工項目，已將多年的研發成果轉化形成了多個具有產業規模的新型電工材料產品，並建立了有序高效的質量保證體系，已通過gjb9001a軍工產品和gb t19001 - 2000 idt iso9001 : 2000民品質量管理體系認證。Measurement of emf of each additional standard cell, in the same enclosure
測量置於同一控溫箱內每一額外標準電池的電動勢。Standard test method for water in crude oils by potentiometric karl fischer titration
卡耳.費歇爾電勢滴定法測定原油中含水量的標準試驗方法Standard test method for active matter in anionic surfactants by potentiometric titration
用電勢滴定法測定陰離子表面活性劑中活性物質含量的標準試驗方法Environment protection becoming a focus in big cities, to meet the energy needs mainly by clean energy products is a prevailing trend. to promote energy conservation, heating system and charge policy is facing great reform. air - conditioner becoming necessity, the city electricity supply systems are confronted by peak load
當前我國大城市關注環保問題，城市能源結構調整勢在必行；民用供暖「分戶計量按熱取費」制度的建立與實現，是調動用戶節能積極性實現供暖節能目標的關鍵之所在；伴隨居民生活水平的提高，空調迅速普及給城市電網帶來巨大壓力。China mindong san qiu electric machine co., ltd. is a modern enterorise with generating set generators, motors and electric pumps as its main products, and the establishment of modern enterprise system as its goal. san qiu people adhere to the policy of “ live by quality and develop by variety ”. based on the local advan - tages, the enterprise is bold in putting thinges into practice and blazing new trials. it strictly carries out iso9001 management system and tries to create first - calss product brands. it has strong technical forces, and its products include 20 series and more than 200 specifications. all of them are well receiced in over 10 countries and regions such as southeast asia, the middle east, africa, south america, etc
中國閩東三球電機有限公司是以發電機、發電機組、電動機、電泵為主導產品，以建立現代企業制度為目標的新型企業，三球人堅持"以質量求生存，以品種求發展"創一流品牌，立足地方優勢，勇於創新，嚴格實行iso9001管理體系，擁有雄厚的技術力量，樹立企業形象，領導市場潮流的管理方針，日前公司產品已有二十個系列二百多個規格，並遠銷東南業、中東、非洲、南美等十多個國家和地區，深受用戶青瞇。In the proposed technique the bemf waveform of bldcm need to be measured in advance at first, through computer simulation and frame transformation, the optimum q - axis current command is achieved. in order to minimize the torque ripple, the d and 0 - axis current command should be zero. furthermore, through reference frame transformation from dqo - axis to abc - axis, we can get the optimum current command in static abc reference frame
在這種控制方法中首先測量出電機的實際反電動勢波形，然後通過計算機擬合和坐標變換，求得產生恆定電磁轉矩所需的q軸電流，令i _ d ~ * = i _ 0 ~ * = 0 ，通過坐標變換，得到三相靜止坐標系a - b - c下的參考電流i _ a ~ * ， i _ b ~ * ， i _ c ~ * ，利用電流滯環控制來產生pwm信號，由於這種控制方法中電流不會突變，從而可以較好的抑制轉矩脈動。Measurement of emf of each additional voltage, from the same reference standard, of same nominal value
測量置於同一標準器具中，而標稱值相同的每一額外電動勢。For the bldcm which has a neither sinusoidal nor trapezoidal back - emf, that is, for a general shape back - emf bldcm, this dissertation proposes a novel id = 0 vector control method. by this method, the iq for a constant torque to produce is calculated through coordinate transformation, and the reference iq is tracked by vector control in the dq0 frame
對于實際反電動勢波形既非正弦又非梯形波的無刷直流電動機，提出一種新型的任意波形反電動勢無刷直流電動機的i _ d = 0矢量控制方法，通過坐標變換浙江大學博士學位佑文摘要求解產生恆定電磁轉矩所需的q軸電流，並在dqo坐標系下通過矢量控制對q軸參考電流進行跟蹤。Besides, successfully calculating the electromagnetic four - potential in the spacetime of charged black hole expressed by the generali zed spherical coordinate and furtherly solving the h - j equation of such spacetime make it possible to get the exact description of the energy extent of nonthermal radiation particle and to study the characteristics of such black hole ' s nonthermal radiation
另外，本文還求出了一類用扁橢球坐標表示的荷電黑洞時空中的電磁四維勢矢量，從而成功地求解了此類彎曲時空中的hh方程，得到了這種非熱輻射粒子能量范圍的精確表達式，從而對這類黑洞的非熱輻射特徵進行了研究。We have developed on our own various types of pe, pp, abs, ps special color master batch, widely used in injection molding, blow molding, blow film and filature, etc, and provide professional color matching, modified granulation services for plastics customers, strictly complying with qb1648 - 92 standard, and use advanced computer color matching system to provide rapid plastics color matching services and ensure that constant stability of color master batch
憑借多年以來在顏料行業的領先優勢和厚重的技術積累，本公司自主開發了各種pe 、 pp 、 abs 、 ps專用色母，廣泛適用於注塑、吹塑、吹膜、紡絲等工藝，並為塑料客戶提供專業配色和改性造粒服務，嚴格執行qb1648 - 92行業標準，使用先進的電腦配色系統為客戶提供準確快速的塑料配色服務，並保證色母質量的長期穩定。“ china machinery & electric products exhibition center " ( abbreviated as chinamex ) is a shareholding service corporation established by china jirong international corporation limited in april, 2000 in sharjah, u. a. e, with focus on exhibition services. it aims at expanding the export of chinese electronic & machinery products ( including other products ), and offering display services to various chinese high - quality product producers and traders which would like to explore the middle east market. the two target markets of chinamex are : powerful, advantageous chinese enterprises and the west asian & african market where the import volume reaches 150billion per year and the economic structure is complementary with china
「中心」以擴大中國機電產品（也包括其它產品）出口、為中國各類優質產品生產企業、貿易公司開拓中東市場提供窗口服務為宗旨[ 1 ] ，將目標市場定位於：中國有實力、有優勢、意欲進軍西亞非洲地區、廣大發展中國家市場的國內各類企業，以及年進口額約1500億美元，與中國經濟結構具有較強互補性的西亞非洲地區市場（該地區不僅對中國產品有需求，同時也是中國原油進口的主要來源地，所佔份額已佔中國進口總量50 %以上） 。Indicators produced by symantec corporation, which measures illegal activity worldwide via more than 40, 000 sensors placed in home and corporate computers, show that illegal internet activity has increased recently ( top graph )
賽門鐵克公司透過裝在一般家庭或公司電腦的四萬多個感應器來測量全球的非法活動，並據此提出數個指標，顯示非法的網路活動在近來有增加的趨勢（請見下方的上圖） 。分享友人