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-湖南網路新聞總站,提供新聞評論時勢分析熱點追蹤等But the grid voltage is different in many countries, so the research of an inverter, which can be used in many countries, will become a trend. a grid - connected inverter in grid - tied and off - grid modes has many advantages such as peak shaving to reduce the overall cost of power by generating during peak load hours in grid - tied mode, and standby generation to provide power during system outages until service can be restored in off - grid mode
由於世界各國電網電壓的規格繁多,能夠研製出適合於多個國家電網電壓規格的逆變器將是未來發展的一種趨勢;獨立與並網雙模式運行的逆變器由於具有緩解電網用電緊張、減少發電站的發電量、在電網斷電時對負載起不間斷供電的作用等優點,也成為現在研究的一個熱點。But, anyhow, here was this deserted wife of his, this passionately fond woman, clinging to him without a suspicion that he would be anything to her but a protector
不過無論如何,現在站在他面前的就是曾經被他遺棄了的妻子,這個感情熱烈的女人緊緊地靠著他,一點兒也不懷疑他就是她的保護者。Aiming at such problems in combustion system of homemade middle and miniature boiler, as a complex system with the character of dead zone, time variation, serious non - linearity, large time delay, coupling and a lot of disturbance, this paper presents a new set of optimal control resources. by using well - matched control method on system, stable automatic running is realized. having the serious divulgence coals difference a lot from each other in character, instability of chemistry, value of lowest emission of heat, home - made boiler controller is not at all ideal. instead of traditional model that controls the ratio based on proportional control or with the correct signal of the amount of oxygen, this paper, combined with intellect control theory - - fuzzy control and self - optimizing concept, propounded a kind of fuzzy self - optimizing controller to be used in air supplying system of the boiler, and expatiates on the idea of dividing the control process into two parts, dynamic and static to realize, thus meets the demand of homemade boiler economic running
本設計針對國產中、小型電站鍋爐燃燒系統參數時變、嚴重非線性、干擾因素復雜、耦合嚴重、模型不易確定的特點,提出多變量協調控制方案,解決了系統可控性差,難以實現穩定自動運行的問題;在此基礎上,改變以往以煙氣含氧量控制送風的傳統模式,針對國產電站鍋爐設備主體及一、二次送風迴路泄露嚴重,煤種混雜、成分不穩定、燃燒發熱值低、燃燒效率不高等問題,應用智能控制理論中的模糊控制技術,結合自尋最優控制的思想,設計了一種模糊自尋優控制器,應用在電站鍋爐送風控制系統上,並闡述了動靜態兩種實現途徑,通過在線優化風煤配比,實現最佳經濟燃燒,切實保障了鍋爐的經濟運行。Electric heat tracing system, composed of power distribution / control unit, temperature detecting / controlling part, heat tracer and so on, has characteristics of high tracing efficiency, accurately temperature controlling and convenient installation and maintenance, the energy - economized project, recommended by national energy saving committee, has widely adopted at petroleum processing spots and gained better benefit
摘要電伴熱系統由電源控制配電、溫度檢測控制元件、電伴熱帶等主要組成部分,具有伴熱效率高、溫度控制精確、安裝維護方便等特點,是國家推薦的節能項目,在原油處理站中得到了廣泛的應用並取得良好的效益。The man followed in a wet black oilskin jacket, like a chauffeur, and face flushed a little. she felt him recoil in his quick walk, when he saw her. she stood up in the handbreadth of dryness under the rustic porch
守獵人跟在後面,穿著一件象車夫穿的黑油布的給雨淋濕的短外衣,臉孔有點紅熱,她覺得當他看見了她時疾速的步伐退頓了一下,她在門搪下那塊狹小的乾地上站了起來,他無言地向地行個禮,饅慢地走上前來,她準備要走開了。The truncated hockenheim track is usually one of the hottest on the calendar, and demands medium - low downforce levels, because of the long, curving back straight ; good mechanical grip, because the slow corners are always slippery ; good stability under heavy braking, particularly in turn 6 where out - braking opportunities present themselves ; and strong engines, as almost three - quarters of the lap is now at full throttle
被縮短了的霍根海姆賽道是賽程表上最炎熱的一站,由於長距離彎曲的非終點直道而需要中低型的下壓力水平,又由於慢速彎道總是很滑還需要良好的機械抓地力以及大力剎車下的穩定性,尤其是第6彎道為自己提供了不剎車的機會,另外還需要強勁的引擎,因為現在的一圈之中幾乎有四分之三是滿油門。Acid - proof brick, acid - proof daub and plaster paint developed by this factory can be used as refractory material for temperature preservation of boiler funnel of power station, which have such advantages as acid resistance, heat resistance, good heat insulation stability and convenient construction
耐酸破磚、耐酸膠泥及抹面塗料是我廠自行研製開發的適用於電站鍋爐煙囪及熱網管道保溫之用的耐火材料,它具有耐酸腐蝕、耐溫、耐熱穩定性、施工方便的特點。Abstract : monthly rainfall data from 1951 to 1995 for june, july and august in 13 meteorological stations of the north china were used for accounting z index and discussing serious flood and drought featureas in these months. serious flood mainly happened in july and august, and sevious drought mainly happened in august. there were more flood in 1950 ' s to 1960 ' s and more drought since 1970 ' s in the north china. meanwhile, the deeper trough which covered the regions from the ural mts. to the balkhash lake play an important role in serious rainstom in rainy season in the north china. there often happened serious flood ( drought ) when the northwester pacific subtropical high was by west and north ( east and south ), and the sea surface temperature in the equatorial central and eastern pacific was mainly in dropping ( raising ) stage
文摘:利用華北平原地區的13個站點, 45年( 1951 1995 )的降水資料,對夏季4個時段( 6月、 7月、 8月、 6 8月)進行了z指數計算,確定了該地區各個時段的嚴重澇年和嚴重旱年.發現華北地區雨季的嚴重洪澇主要集中在7 , 8月,嚴重乾旱則主要發生在8月,並可明顯看出由50 60年代的多水期向70年代中期以後的少水期的轉變,另外,烏拉爾山到巴爾喀什湖附近的低壓槽加深和西北太平洋副熱帶高壓的北抬,對華北地區雨季持續性暴雨的產生起著決定性的作用.嚴重洪澇年的夏季( 6 8月) ,西北太平洋副熱帶高壓偏西、偏北,赤道東太平洋海溫多處于下降階段;嚴重乾旱年西北太平洋副高偏東、偏南,赤道東太平洋海溫則處于上升階段Early the following year a monthly magazine picked up the story, and then it hit the internet. university entrance exam sites were abuzz with it
下一年的年初,一家月刊對此進行了報道,后來又在國際網際網路上成為熱點。大學入學考試的網站上沸反盈天的全是關于這個問題的討論。Fifth, a monitoring center for guarantee of apec communications was set up to undertake round - the - clock real - time supervision, which included supervision of traffic flowing in exchanges that were installed in all meeting venues and key hotels ; supervision on tv signals ; supervision on the running of 82001 equipment ; supervision on the traffic of the shanghai internet node ; supervision on the traffic of the apec mirror site on shanghai hotline ; supervision on the status of the cdpd equipment ; supervision on the status of the adsl equipment and supervision on the status of the atm equipment
第五,建立apec通信保障監控中心,實施2 4小時實時監控。包括對各場館、重要賓館交換設備的話務監測;電視信號監測; 82001設備運行情況監測;網際網路上海節點的流量監測;上海熱線apec鏡像網站的流量監測; cdpd設備運行情況監測; adsl設備運行情況監測; atm設備運行情況監測,形成了一個縱觀全局的指揮平臺。Based on the propounded control algorithm, combined with the developmental way of thematic project automation, this paper designs a system structure of distributed control system with unique merit, which fit for the automatic and intellectual requests of automation of homemade middle and miniature power station boiler. the parameter self - optimizing fuzzy control system designed by this paper has been put into continuous automatic running in industrial process. the integrated characters of the system has gone beyond the national standards and has achieved ideal control effect as well as economic efficiency
基於本文提出的控制策略,結合熱工自動化的發展方向,設計出一種適合我國國產中小型電站鍋爐特點的計算機分散式控制系統dcs結構,符合我國國產中小型電站鍋爐運行自動化、智能化的要求,該系統成功地在工業現場中投入全自動連續運行,性能可靠,經濟性好,綜合性能指標達到或優于部頒標準,取得了理想的控制效果和良好的經濟效益。The virtual banking is an operation web site for the dummy banking services on internet. it provides invisible electronic bank for clients lying at wide positions by internet, such as query operation, fund transformation, payment and other hundreds of banking services. it is the hot financial research domain, and also the inevitable developing trend of the traditional banking
虛擬銀行( virtualbanking )是指在internet上設立虛擬的銀行服務業務站點,通過internet向位於不同地理位置的客戶提供包括業務查詢、資金轉移、帳單支付和其他幾十種銀行業務服務與銀行產品的、用肉眼看不見的電子化銀行,是目前金融業的研究熱點,也是傳統銀行必然的發展趨勢。Monthly rainfall data from 1951 to 1995 for june, july and august in 13 meteorological stations of the north china were used for accounting z index and discussing serious flood and drought featureas in these months. serious flood mainly happened in july and august, and sevious drought mainly happened in august. there were more flood in 1950 ' s to 1960 ' s and more drought since 1970 ' s in the north china. meanwhile, the deeper trough which covered the regions from the ural mts. to the balkhash lake play an important role in serious rainstom in rainy season in the north china. there often happened serious flood ( drought ) when the northwester pacific subtropical high was by west and north ( east and south ), and the sea surface temperature in the equatorial central and eastern pacific was mainly in dropping ( raising ) stage
利用華北平原地區的13個站點, 45年( 1951 1995 )的降水資料,對夏季4個時段( 6月、 7月、 8月、 6 8月)進行了z指數計算,確定了該地區各個時段的嚴重澇年和嚴重旱年.發現華北地區雨季的嚴重洪澇主要集中在7 , 8月,嚴重乾旱則主要發生在8月,並可明顯看出由50 60年代的多水期向70年代中期以後的少水期的轉變,另外,烏拉爾山到巴爾喀什湖附近的低壓槽加深和西北太平洋副熱帶高壓的北抬,對華北地區雨季持續性暴雨的產生起著決定性的作用.嚴重洪澇年的夏季( 6 8月) ,西北太平洋副熱帶高壓偏西、偏北,赤道東太平洋海溫多處于下降階段;嚴重乾旱年西北太平洋副高偏東、偏南,赤道東太平洋海溫則處于上升階段In this paper, decadal variability of tropic and north pacific ' s ssta and of precipitation in china, correlations between them and the possible mechanisms of the ssta decadal change compacting on the precipitation decadal change are analyzed by using ncep globe temperature, wind and height data ( 1948 - 2001 ), coads ssta data ( 1900 - 2001 ) and 147 stations " precipitation data in china. results show that : ( 1 ) mid - high latitude north pacific and tropic west pacific ssta have obvious decadal change, the prior ' s decadal change has great variance and the latter ' s has great contribution in total variance, the main eigenvectors " distribution are stable in eof of tropic and north pacific ssta ' s decadal variability, the key area of the first eigenvector allots in two sides of tropic pacific ; the second one ' s allots in mid - high latitude northwest pacific and low latitude mid - east pacific which vary contrary ; the third one ' s allots in middle north pacific
本文利用ncep資料( 1948 - 2001年)中的全球表面溫度場、風場、高度場資料, coads ( 1900 - 2001年)海表面溫度距平資料及中國147個站點1951 - 2001年共51年的降水資料,探討了熱帶及北太平洋ssta 、中國降水的年代際變化特徵,夏季熱帶及北太平洋ssta年代際變化與中國夏季降水年代際變化的耦合相互關系以及夏季熱帶及北太平洋ssta年代際變化影響中國夏季降水年代際變化的可能機制,結果表明: ( 1 )北太平洋中高緯與熱帶西太平洋均有明顯的年代際變化,北太平洋中高緯年代際變化方差顯著,而熱帶西太平洋年代際變化方差貢獻顯著。Hot website promotion
-熱門站點友情鏈接-This local thermal effect means that excess heat is reduced to an injured area and what follows is reduced pain, reduced soreness, and restoration of range of motion to the specific injured site
這個地方熱量作用意味,剩餘熱量被減少到一個被傷害的區域並且什麼隨后而來是被減少的痛苦、被減少的行動的范圍的疼痛,和恢復對具體被傷害的站點。E - commerce sites are target of most of the attacks recently, so what should these companies have or do in order to maintain their competitiveness, and prevent from losing customers ' trust
據最新調查,商業站點是眼下最熱門的攻擊目標,那麼這些公司該如何來保持自己的競爭力和維持自己公司客戶的信任呢?Welcome to lene - marlin. cn, you can know more recent news about lene and her music career, you can register up in forum in where you can know more fans of lene marlin
歡迎到站點來了解琳恩,了解她的最新動態和她的音樂和故事,本站帶著全新的面目熱烈歡迎每位琳迷的到訪,如果各位向與更多的琳恩迷交流,可以申請加入本站論壇,認識更多志同道合的樂迷This paper describes the heating networks telemetry system and the computer terminal system at heating stations and details the features and function of software system data communication via wireless series ports
摘要簡述了熱網計算機無線遙測系統的構成原理和供熱站終端系統結構,介紹了監控通訊系統軟體的特點與功能,並詳細闡述了串口無線通訊中數據的發送與接收過程,實現了客戶服務器體系的數據庫系統。分享友人