等面積 的英文怎麼說
中文拼音 [děngmiànjī]
等面積
英文
homalographic-
Equal-area projections are preferred for statistical mapping.
等面積投影通常均優先用於統計制圖。In order to obtain the most economic benefits, the paper utilized the theory of " homalographic characteristic " and " share alike compensation current characteristic " to build up the best compensation relation for " hour - current " curve applied to transformer substation and for " length - current " curve applied to distribution line
以獲得最大經濟效益為目標，利用「等面積特性」和「補償電流等分特性」理論。推導了應用於變電站的「時間?電流」曲線關系中存在的最佳補償關系，以及應用於配電線路的「長度?電流」曲線關系中存在的最佳補償關系，及補償后的經濟效益計算模型。Refers to farmland which is plowed constantly for growing crops, including cultivated land, newly cultivated land in the current year, farmland left without cultivation for less than three years and fallow land in the current year, rotation land, rotation land of grass and crops, farmland with some fruit trees, mulberry trees and other trees and cultivated seashore land, lake land, and etc
指年初可以用來種植農作物、經常進行耕鋤的田地，除包括熟地、當年新開荒地、連續撂荒未滿三年的耕地和當年的休閑地（輪歇地） ，還包括以種植農作物為主並附帶種植桑樹、茶樹、果樹和其他林木的土地，以及沿海、沿湖地區已圍墾利用的「海塗」 、 「湖田」等面積。Cultivated area ( area under cultivation ) ： refers to farmland which is plowed constantly for growing crops, including cultivated land, newly cultivated land in the current year, farmland left without cultivation for less th an three years and fallow land in the current year, rotation land, rotation land of grass and crops, farmland with some fruit trees, mulberry trees and other trees and cultivated seashore land, lake land, and etc
耕地面積：指年初可以用來種植農作物、經常進行耕鋤的田地，除包括熟地、當年新開荒地、連續撂荒未滿三年的耕地和當年的休閑地（輪歇地）外，還包括以種植農作物為主並附帶種植桑樹、茶樹、果樹和其他林木的土地，以及沿海、沿湖地區已圍墾利用的「海塗」 、 「湖田」等面積。According to the observed experiments that the na2feo4 solution with the same concentration and volume were decomposed by the same area of different membrane, we learned the order of the decomposing rate of na2feo4 caused by different membranes : soapnated cellulose acetate > vinylon > polypropylene polyvinyl chloride = polyethylene microfiber glass mat
從觀察等面積的隔膜引起同濃度同體積的na _ 2feo _ 4溶液的分解實驗可知，不同隔膜材料引起na _ 2feo _ 4溶液分解速率從大到小的順序是，皂化再生纖維素膜維尼綸無紡布改性聚丙烯膜聚氯乙烯膜輻射接枝聚乙烯膜復合玻璃纖維氈。An old theorem from the first half of the nineteenth century by lowry, wallace, bolyai and gerwien asserts that any simple polygon can be dissected into a finite number of pieces and put back together to form any other simple polygon of the same area
十九世紀上半葉lowry ， wallace ， bolyai與gerwien同時證明了一個古老的數學命題：任意給定平面上一個簡單多邊形，必可將其分劃成有限塊，重新安排，拼成另一個任意給定的等面積的簡單多邊形。Refers to prairies, grasslands on the slopes, and grass - mountains in pastoral and agricultural areas used for herding and grass growing with vegetation coverage above 5 %, including natural, planted or improved grassland
指牧區和農區用於放牧牲畜或割草，植被蓋度在5 %以上的草原、草坡、草山等面積。包括天然的和人工種植或改良的草地面積。On the assumption of ignoring the distortion of thickness, this paper determines the rough shape by the geometric modeling method of equal area developing using mixed mesh cell of triangle and quadrangle for the first time, presents the equal area developing arithmetic of quadrangle - triangle. on the virtual geometric symmetry axis, we puts forward the method of determining the developed coordinate of the point on the base band in the development of using regular quadrangle cell, determines the developed shape of internal structure in plane utilizing point - to - point mapping theory. furthermore, we realize the approximate developing of undeveloped - irregular boundary surface using a few triangle cells
本文結合型號研製中小曲率機翼整體壁板類零件坯料展開課題，基於板料厚向變形忽略不計的先驗假設，首創混合四邊形-三角形網格等面積展開的幾何模擬法確定壁板類零件毛坯外形，給出了混合四邊形-三角形網格等面積展開演算法；提出了虛擬分割線的概念，採用虛擬幾何對稱軸，給出了規整四邊形單元展開基帶上結點的計算方法；採用映射原理和求交演算法確定了壁板內部結構信息的展開定位。The dissertation gives a profound and extensive theoretic research of starting process, causes of fall - out and damages caused by fall - out as well as the electromagnetic process in large pumping station. the ? qual area criterion ? is used in this research to analyze the stability limitation of the synchromotors fall - out in detail. in the end, the study also puts forward a couple of practical methods to prevent synchromotors from fall - out and corresponding solutions to the fall - out
本文主要內容是：圍繞大泵站同步電機起動過程、運行中的失步機理及危害、失步時電磁物理過程等方面進行了細致深入的理論研究；用「等面積定則」分析大泵站同步電機失步的穩定界限並提出求解方法；提出預防同步電機失步的措施。Under the horizontal earthquake action and wind force, aim at " the pure frame structure with rectangle columns ", " the pure frame structure with special - shaped columns ", " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns ", earthquake action analysis was done by the spacial finite element method through the changes structural parameter. analyzing systematically " structure vibration mode ", " vibration period ", " structure lateral rigidity ", " seismic action force ", " seismic response force ", " floor seismic shear force ", " lateral horizontal displacement of structure " and " members internal force ". results indicate : ( 1 ) based on equal area, the special - shaped columns replaced the rectangle columns, the structural lateral rigidity enlarges, the lateral displacement minishes obviously, the earthquake response increase slightly, the biggest increasing amount of frame columns axis - compress ratio is smaller than 0. 08. the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3. 6, the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree, structure earthquake response is bigger, belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement, members internal force enlarged just rightly, have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ), aseismic disadvantageous building site ( iii type site ), adopting special - shaped columns structure system, should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result
西安理工大學碩士學位論文在水平地震作用下，並考慮風荷載組合，分別對「矩形柱純框架結構」 、 「異型柱純框架結構」 、 「異型柱框一析架結構」及「異型柱框-剪結構」等四種結構體系，通過改變結構參數，運用空間有限元方法，進行地震作用計算。系統地分析研究「結構振型」 、 「振動周期」 、 「結構側向剛度」 、 「結構地震反應力」 、 「樓層地震剪力」 、 「結構側向位移」 、 「層間位移角」 ，以及「構件內力」 。結果表明:在等面積原則下，異型柱代換矩形柱后，結構剛度增大，側向位移明顯減小，地震反應力略有增加，框架柱軸壓比最大增幅小於8 % ，結構整體抗震性能有所提高;當異型柱肢長肢厚比小於等於3 . 6時，結構有利於抗震;水平地震作用力與整體坐標夾角為0度時，結構地震作用效應較大，屬結構設計的控制因素之一;異型柱框一析架結構採用「人」字斜撐，側向剛度大於「八」字斜撐和「人一八」字混合斜撐;異型柱框一剪結構側向剛度大、位移小，構件內力增大適中，是一種抗震性能優越的結構體系:在抗震設防烈度較高地區（ 8度）和抗震不利的建築場地（ m類場地） ，採用異型柱結構體系時，應盡可能減輕結構自重，降低地震作用力;分別採用「振型分解反應譜」法和「時程分析」法進行地震作用計算，兩種方法所得結果基本一致。A new algorithm for generating spwm waveform
波形等面積動態遞推演算法The author also take the real power network - beiguan line as an example for the utilization of the equivalence square law, and obtain the the optimum compensation capacity and compensation position for beiguan line
結合對等面積法的學習，並利用實際運行的線路?北關路進行了計算。最終得到了北關路的最佳補償容量和補償位置。In this article, based on the comparison between several traditional calculation methods, the equivalence square law, which is of excellence in terms of utilization, calculation and programming, is finally selected by the author as the method for calculating reactive power compensation
本文通過對幾種傳統無功優化補償方式的比較，最終選擇了等面積法作為本論文的無功補償優化的計算方法。這種方法具有通用性好、計算方便、便於編程等優點。This may be uneconomical or even infeasible in some circumstances. in contrast, ec actions usually cost dearly, and need restoring time if the objective disturbances actually occur. obviously, it is great significant for assuring large scale power systems in security and economy operation states to optimize pc ec and their coordination
另一方面，擴展等面積準則（ exendedequal - areacriterion - eeac ）的完善、在線控制方案及其相關技術的成熟、優化領域的進展克服了研究統一的大電網暫態穩定控制安全性和經濟性協調的客觀、主觀瓶頸，提供了課題研究的可行性依據。The simulation results show that the control system has high robust and stability. xia shangxue ( power system and its automation ) directed by prof. tian jianshe
模擬結果表明：本人提出的控制策略在近似等面積演算法下控制效果好、有較強的魯棒性。Theorem 4. 4 any polygonal dissection of a convex n - gon into a square of the same area requires at least [ ] pieces
4用polygonalcut方法把一個凸n邊形分劃為等面積的正方形至少需要[ n / 4 ]塊。In the present paper, we discuss the minimum number of pieces needed to dissect a regular m ? gon into a regular n - gon of the same area using glass - cuts and polygonal cuts. we obtain the following results
本文主要討論分別用兩種不同的分劃方法- glass - cut分劃法和polygonalcut分劃法把一個正m邊形分劃為等面積的正n邊形需要的最小塊數。Theorem 4. 3 the following bound holds for the function g for all sufficiently large non - negative integers m < n : where g ( m, n ) denotes the minimum number of pieces needed to dissect a regular m - gon into a regular n - gon using glass - cuts
3設g （ m ， n ）表示將一個正m邊形分劃為等面積的正n邊形所需的最小塊數，對于足夠大的非負整數m n ，下式成立：定理4First, programming to calculate the fuzzy control table, then analyses the harmonic of the area equivalent algorithm and the approximate area equivalent. with the matlab simulating tool and visual basic language, the designed system is simulated, and the result is given
首先，本人編程計算出模糊控製表，給出了模糊控制器的設計過程，接著分析了等面積演算法和近似等面積演算法（本人提出）下spwm波的諧波含量，並對兩種方法進行了比較。The paper discusses a method that produces the spwm ( sine pulse width modulation ) waveform in detail, which is the changed equal - area arithmetic and compares with the equal - area arithmetic, and analyzes the harmonic that produced by the arithmetic, discusses the problem of dead - time and gives the resolvent
文中詳細討論了生成spwm波的一種改進的等面積演算法的原理，進行了諧波分析，並和等面積演算法進行了比較，討論了死區問題和解決方法。分享友人