main diagonal 中文意思是什麼
main diagonal
解釋
主對角線-
Based on practical project of inspecting, appraising and reinforcing a main heavy factory building, especially its steel crane girder system, of the second steel mill belonging to taiyuan steel & iron corporation, whose technology renovation leads to increase tonnage of many heavy cranes and vertical load of frame - bent structure, first the structure and its members were investigated, inspected, calculated and analyzed, and their reliability was appraised respectively and the strengthening projects or the measures to remedy were given. then, in accordance with the requirement to strengthen the girders under non - stop production, the feasibility of strengthening the crane girders by adding steel diagonal braces underneath the existing girders has been studied by inspecting and evaluating the strengthening effect of the crane girders and comparing with other reinforcing scheme
本文結合太鋼（集團）有限公司第二煉鋼廠主廠房由於生產工藝改造要求，加大多臺重型吊車噸位及bc跨（ 1 ） （ 8 ）軸線框排架各層豎向（設備）荷載后，對廠房結構，尤其鋼吊車梁系統進行檢測鑒定與加固設計的實際工程，首先對廠房結構進行了現場調研、技術檢查、測試以及內力和承載能力的計算與分析（考慮抗震） ，並根據檢測、計算與分析結果，對廠房結構、構件的可靠性進行了評定，並綜合提出鑒定結論和加固處理建議。 -
In this paper it is shown that a partial toeplitz pattern has a toeplize positive definite completion if and only if the diagonals for the specified entries are 0, t, 2t, . ., pt ( in which the main diagonal is numbered 0 )
本文討論部分toeplitz正定陣的toeplitz正定完成問題，證明了一個部分正定toeplitz模式存在正定toeplitz完成的充分必要條件是已知元所在對角線的標號成等差數列。 -
Since the fault zone had been activated in the later paleozoic, it controlled the evolution of magmatism and metallization belt in taihang mountains. our field workspace is in the northern part of taihang mountains, which is the diagonal area of two main faults
太行山北段是紫荊關斷裂帶兩主斷裂斜列重疊部位，通過對該區作詳細的野外斷裂構造剖面觀測，比較詳盡地收集了斷裂帶構造組合資料及構造巖標本。 -
The main object of this paper is to design a diagonal impeller, which requires small size and high rotating speed. the first step of the design is to solve the radial equilibrium equations on the s2 stream surface. second, the blades designed according to the results of the first step
方案計算是為二維設計做基礎；二維設計是在s2流面內用流線曲率法求解完全徑向平衡方程，利用流場計算的結果來初步判斷設計的工程合理性；葉片造型利用s2流場的計算結果，近似沿著氣流流面進行造型。 -
Dbf algorithms for 2d planar array based on the algorithms for 1d array are discussed in this paper. the author ' s main contributions include research of the adaptive digital beamforming algorithm, which control both amplitude and phase of each array element : diagonal loading qrd - smi algorithm. research of two phase - only dbf algorithms : small phase perturbation restriction algorithm and maximum gain of the expected direction restriction algorithm
面陣的數字波束形成演算法是面陣dbf技術的關鍵，本文在現有的一維數字波束形成演算法基礎上，研究了二維面陣的數字波束形成演算法，主要工作有：面陣的幅度相位全控制自適應數字波束形成演算法? ?對角加載qrd - smi演算法的研究；兩種面陣唯相位（ phase - only ）數字波束形成演算法? ?小相位擾動約束演算法和期望方向增益最大約束演算法的研究；面陣的數字多波束形成演算法? ?二維fft多波束的研究，以及fft在可編程邏輯器件中的實現。 -
The main object of this paper is to design a diagonal impeller, which requires small size and high rotating speed the first step of design is to solve the radial distribution of parameters at the inlet and outlet of the blade, such as pressure, temperature and velocity. and then, according to the radial distribution, we can design the diagonal impeller blade. blade elements are defined on a cone, which pass through the blade edge streamline location
其設計思想是採用準三維設計方法，先進行二維流場計算，在葉片軸向間隙中設立計算站，應用數值計算方法計算葉片前後緣的壓力、溫度、速度等參數沿葉高的分佈，然後根據這些參數，選取若干個回轉面進行葉型設計；再將各回轉面上得到的基元葉型沿某一個積疊軸積疊起來形成三維葉片，最後對得到的三維葉片進行試驗，並對實驗結果進行分析比較。 -
The algorithms do not use any pivotal operation, but use the generalized ( e, d ) - active constraint set to determine the generalized projection matrices. the diagonal matrix of the projection matrix is a new construction method and it is the main function to insure the finite termination
演算法不使用任何轉軸運算，僅用（ ， ） ?積極約束集確定廣義投影陣，該投影陣中的對角陣是一種新的構造方法，它在保證演算法的有限步收斂中起十分重要的作用。
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