算術幾何級數 的英文怎麼說
中文拼音 [suànshùjīhéjíshǔ]
算術幾何級數
英文
arithmetic geometric series- 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
- 術 : 術名詞1. （技藝; 技術; 學術） art; skill; technique 2. （方法; 策略） method; tactics 3. （姓氏） a surname
- 幾 : 幾代詞1. （多少, 用於詢問數量和時間） how many 2. （表示不定的少數目） a few; several; some
- 級 : Ⅰ名詞1 （等級） level; rank; grade 2 （年級） any of the yearly divisions of a school course; gra...
- 數 : 數副詞（屢次） frequently; repeatedly
- 算術 : arithmetic figure; arithmetic
- 級數 : [數學] progression; series; number of stages; number of steps; stage number級數變換 transformatio...
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Especially, the unknowns of the algebraic equations about 3 - dimensional problems increase as geometrical progression compared with 2 - dimensiond problems. so development of computers can not meet their needs
特別地，三維問題最終產生的代數方程組未知數的個數與二維問題相比，將按幾何級數急劇增加，即使計算機技術飛速發展，也難以滿足它們的需求。Compared with a delta wing aircraft, the double - delta wing configuration has better aerodynamic performance at high angles of attack. an operational analysis was introduced as a method for evaluating training effectiveness of trainer aircraft. approaches to the engineering estimation of aerodynamic characteristics for aircraft with a double - delta wing configuration were studied, and the procedures for determining aircraft performance indices formulated. taking training effectiveness as the objective function and geometric parameters of the wing platform as design variables, through a numerical multivariate optimization arithmetic, the conceptual design optimization for a certain fighter trainer aircraft with double - delta wing configuration was carried out under the constraints of tactical and technical requirements and interrelated geometry. agreement of a calculation example with engineering practice indicates that the optimal design has higher training effectiveness than the baseline design, and in addition, improves the structural force - bearing conditions
雙三角翼氣動布局比三角翼飛機具有更好的大攻角空氣動力特性.引入了評估教練機訓練效能的作戰分析法，研究了雙三角機翼布局飛機空氣動力特性的工程計算途徑以及飛機性能指標的確定方法.以訓練效能作為目標函數並選取機翼平面形狀的幾何參數為設計變量，採用多變量數值尋優方法，在戰術技術指標及相關幾何約束條件下，對某高級教練機的雙三角機翼氣動布局方案進行了優化選擇.算例表明最優方案不僅比原準方案具有更高的訓練效能，還改善了結構的受力情況，與工程實踐吻合In the mathematics test, three subscores are based on six content areas : pre - algebra, elementary algebra, intermediate algebra, coordinate geometry, plane geometry, and trigonometry
數學測試部分，共六個方面的內容組成了三個部分的得分：算術、初級代數、中級代數、幾何坐標、平面幾何、三角形。
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