鐵電態 的英文怎麼說
中文拼音 [tiědiàntài]
鐵電態
英文
ferroelectric state-
Six foundation works : first, projects to prevent flood, avoiding huai river overflow again ; second, projects of comprehensive traffic, perfecting the highway, railway, waterway and aviating traffic network ; third, ecological environmental protection project to improve peoples living conditions and strengthen environmental ecological construction progressively ; fourth, construction of " digital fuyang ", realizing datamation of product design, automation of production process, and electronization of commercial market ; fifth, sincere project of fuyang, advancing all kinds of sincere institutional improvement of same trade, forming morals based on sincerity, and personal integrity ; sixth, talents market project, developing human resources diversely
六項基礎工程:一是防洪保安工程,切實根除淮河心腹之患;二是綜合交通工程,完善公、鐵、水、空綜合交通網路;三是生態環保工程,改善人居生活條件,加強環境生態建設;四是數字阜陽工程, .逐步實現產品設計數據化、生產過程自動化、營銷商務電子化;五是誠信阜陽工程,推進各類同業誠信制度建設,形成誠信為本、操守為重的社會風尚;六是人才強市工程,多方位開發人力資源。That the earth has an iron - rich liquid core, sufficient energy to drive convection and a coriolis force to twist the convecting fluid are primary reasons why the geodynamo has sustained itself for billions of years
地球擁有富含鐵的液態核心、有足夠的能量驅動對流,並具有科氏力可使對流的流體扭轉,這些是地球發電機之所以能自我維持數十億年的主要原因。According to the electron probe analyses and other data, some conclusions have been reached as follows : the modes of occurrence of associated silver include minerals of stephanite, bromargyrite, ag - sb - tetrahedrite, electrum etc., which occur as small grains among or between fe - mn minerals
利用電子探針等測試方法對錳礦石中伴生銀的賦存狀態進行研究,初步查明銀主要是以脆銀礦、溴角銀礦、銀銻黝銅礦、銀金礦等礦物形式存在,呈微小顆粒狀被包裹于鐵錳礦物內或礦物間隙里。The main features of the apparatus are focus on small volume, light weight, no iron core, no magnetic saturation and no ferreous resonance, moreover, related advantages such as the large range of transient and frequency response, excellent electrical magnetic compatibility, oil - free configuration, reliable insulation structure, are all the trends of current transformer in the future. meanwhile, it should agree with the future power gauge and digital, computer, automatic relay protection. it will meet the demand of digital power network
它具有體積小、重量輕;無鐵芯、不存在磁飽和與鐵磁諧振問題;動態響應范圍大,頻率響應寬;抗電磁干擾性能強;無油化結構、絕緣可靠、價格低等優點;是未來電流互感器發展的方向,是新一代電力數字網發展的需要,適應電力計量和保護數字化、微機化和自動化發展的潮流。Ssr - dd series of dc solid relay is vastly applied to output joggle of computer and external equipments, it is also applied to control or switch dc load : dc relay 、 contactor 、 dc electrical motor 、 kinds of electric - heating apparatus 、 dc electromagnetic valve 、 electromagnetic iron 、 solenoid 、 filament lamp 、 indication lamp 、 plc logical electrical appliance and dc solid relay
Dd系列直流固態繼電器廣泛應用於計算機與外部設備的輸出介面,適用與控制或開關直流負載:直流繼電,接觸器、直流電動機、各類電熱器具;直流電磁閥,電磁鐵、螺線管、白熾燈、指示燈; plc邏輯電器。At present, differential protection is often used as the main protection for traction transformers. however, the existing of certain factors, such as magnetizing inrush, over - excitation, ct saturation and mismatching of ct ratio, will result in that it is hard to distinguish state current and fault current, and differential protection misoperation or maloperation, then secure operation of electric railways system will be threatened
目前,牽引變壓器通常採用差動保護作為主保護,但是在某些因數的影響下差動保護並不能準確的區分牽引變壓器內部故障或非內部故障,如故障電流與變壓器處于勵磁涌流、過勵磁, ct飽和及ct變比不匹配等情況下的狀態電流就很難準確的區分,可能造成保護誤動或拒動,從而危及整個鐵道電氣化系統的安全運行。Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究,內容包括: ( 1 )本文採用有限長行波面電流作用於有限長鐵芯上的模型,引用了氣隙磁場一維解,研究了單層繞組磁場,奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較,簡單介紹了二維解; ( 2 )用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析,並分析了結果; ( 3 )用軟體進行了額定電壓下的瞬態分析,得到了轉矩,位移,轉速隨時間變化曲線圖,利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較,採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證,由實驗測得了三相電流波形,並與計算結果進行了比較,對其不對稱性進行了定性分析。The minimum of resistivity at low temperature range can be explained by magnetic scattering which corresponds to the peak of magnetization. all of the experimental data can be well explained on the basis of vrh model, which comes from not the clusters, but the inhomogenous magnetic background. based on the mechanism of transport, cmr effect is elucidated
體系磁性和電性的影響,通過實驗分析得出了下列結論: q ) dy對la的替代產生了無規的磁勢,破壞了mn o mn長程鐵磁序,導致在tn丁tc溫區出現團簇玻璃態,在t tn溫區,由於dy子大的磁矩, la ( dy亞晶格和mn亞晶格磁矩強烈的耦合,體系呈現反鐵磁態We have developed the theory of boundary shielding approximation of electric polarization, from which the values of spontaneous polarization of some typical ferroelectric materials can be derived. the shielded charges in ferroelectricity are in the state of surface bound polaron - dipole whose creation and annihilation must span a potential barrier. by introducing statistical method, four types of typical electric hysteresis loops of some common crystals and ceramics have been given, which are well consistent with the experimental results
利用電極化的邊界屏蔽近似,可計算出一些典型鐵電單晶的自發極化強度.鐵電屏蔽電荷處于表面束縛極化子偶狀態,其產生和湮沒要跨越位壘.由統計方法給出的一些常見晶體和陶瓷的四種典型電滯回線形狀,和實驗觀察到的結果一致If the interfacial coupling of the ferroelectric bilayer is antiferroelectric, we find it is possible to exist triple hystersis loops once the parameters of the two slabs are selected appropriately
當鐵電雙層膜的界面耦合為反鐵電耦合時,發現在適當的材料厚度、反鐵電耦合強度、橫場和溫度的匹配下可以觀察到多態電滯回線。Quasi - static test method for ferroelectric hysteresis loop in ferroelectric ceramics
鐵電陶瓷材料電滯回線的準靜態測試方法We obtain that i ) with the increase of the phonon - pseudospin interaction and the thickness of the superlattice, the phase transition temperature of the superlattice will increase. ii ) the increase of the phonon - pseudospin interaction leads to the change of the number of the pyroelectric peaks in the temperature curve of pyroelectric coefficient and to the change of the pyroelectric coefficient
研究發現,聲子與贗自旋的相互作用會影響鐵電超晶格熱電峰的數目以及熱電系數的溫度曲線的形態,而且聲子與贗自旋耦合作用的增強以及超晶格尺寸的增大都會使整個材料的相變溫度增加。The intrinsic hysteresis of a ferroelectric bilayer with an antiferroelectric interfacial coupling is studied within the framework of tim. we find it is possible to exist triple hysteresis loops once the parameters of the two slabs are selected appropriately
對反鐵電界面耦合的鐵電雙層結構薄膜的內稟電滯回線研究中,我們發現在適當的條件下,能出現多態電滯回線。Ferroelectric ( ba, sr ) tio3 thin films have excellent ferroelectric / dielectric properties, and own good application prospect in tunable microwave devices, dynamic random access devices, and pyroelectric detector devices
鐵電鈦酸鍶鋇薄膜具有十分優越的鐵電介電性能,在可調諧微波器件、動態存儲器件,以及熱釋電探測器等方面具有很好的應用前景。Although ferroelectric ordering doe s not appear within the whole temperature range in eutio3, coupling of a certain form between the ordering parameters in electrical and magnetic subsystems causes the dielectric anomaly near its neel temperature
盡管eutio _ 3在整個溫度范圍內不出現鐵電有序態,可視為其電序參量平均值為零,但電系統和磁系統序參量某種形式的耦合導致了該材料在尼爾溫度附近的介電反常。Polymer networks have been produced in a variety of liquid crystal phases in cells without surface treatment. the liquid crystal / monomer mixtures are prepared using a ferroelectric liquid crystal and a diacrylate monomer. the polymerisation of the monomer is carried out by uv curing the mixture when it was kept in a specific phase which can be obtained by controlling the temperature of the ferroelectric liquid crystal. both the monomer and the polymer network will depress phase transition temperatures. the effects of the polymer network on the packing arrangement of the ferroelectric liquid crystal molecules are examined by means of optical microscopy. the molecular packing arrangement of the ferroelectric liquid crystal in a specific mesogenic phase is frozen on the formation of a polymer network in the ferroelectric liquid crystal in that phase. the existence of the diacrylate based polymer network can improve the electrooptical switching of the ferroelectric liquid crystal
在灌裝于未經表面處理的樣品盒內處于不同狀態的液晶中制備聚合體網路.液晶/單體混合物由鐵電液晶和雙丙烯酸單體製成.單體的聚合通過維持該混合物處在一定的液晶態的條件下經紫外線固化來完成.不同的液晶態可通過控制鐵電液晶的溫度來獲得.雙丙烯酸單體或聚合體網路的存在會導致鐵電液晶載體的相變溫度降低.通過光學顯微鏡可觀察聚合體網路對鐵電液晶分子組合排列的影響.結果發現:在某一液晶態中鐵電液晶分子的組合排列可被在該液晶態中聚合而成的聚合體網路所穩定,雙丙烯酸基聚合體網路的存在可改良鐵電液晶的電光開關特性Both the monomer and the polymer network will depress phase transition temperatures
不同的液晶態可通過控制鐵電液晶的溫度來獲得。Abstract : in this paper, we present a fuzzy approach fo r the unclear boundary constrained multiobjective optimization function in ac ma g netic according dynamic targets. using membership function and a certain membersh ip value to fuzzificate and defuzzificate the constriction
文摘:對交流電磁鐵動態優化設計過程中的非明確約束條件范圍做了一定的探討,闡述了應用隸屬函數和模糊截集的概念建立明確約束條件的思想。Two conclusions about suspending control system are given in this paper : 1. the single suspending system controlled by parameter self - turning control algorithm has better performance when the mass of single point suspending system, the resistance of electromagnet and the suspending gap are variable ; 2. the single suspending system controlled by global asymptotic stability control algorithm is global asymptotic stability and can restrain the stochastic noise
通過對採用上述控制演算法的懸浮系統的理論分析和模擬研究,主要得到了以下幾方面結論: 1 .當系統懸浮質量、電磁鐵電阻和額定間隙參數變化時,設計的參數自校正控制演算法可使系統的動態性能指標保持在設定的指標; 2 .設計的全局穩定控制演算法,能夠保證二級結構單點懸浮系統的全局漸近穩定,且對隨機噪聲干擾有一定的抑制作用。The natures of the probe and formation mechanisms in these techniques are different ; therefore, the images of spm can reflect different properties of sample surface. in this work, related properties of ferroelectric thin film were investigated as followed : the main factors determining the image formation of piezoresponse force microscopy ( pfm ) and scanning nonlinear dielectric microscopy ( sndm ) were studied. to avoid the misreading of the same conductive tip with different state, a new method of polarization distribution mapping with nonconductive tip was proposed, and the result of experiment demonstrated that the polarization distribution of ferroelectric thin films could be characterized well by the new approach
本工作主要分為以下幾個部分:從研究鐵電薄膜的壓電響應力顯微鏡( pfm )和掃描非線性介電顯微鏡( sndm )成像的影響因素入手,討論了針尖對成像質量的影響;為降低實驗成本、減小導電探針針尖狀態變化對鐵電薄膜微區電性能測試的負面影響,提出了以非導電探針檢測微區極性分佈的方法,並在現有spa - 300hv型spm的實驗平臺上以pfm模式成功實現了新方法對鐵電薄膜極性分佈的表徵。分享友人