重量穩性力矩 的英文怎麼說
中文拼音 [zhòngliángwěnxìnglìjǔ]
重量穩性力矩
英文
weight stability moment- 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
- 量 : 量動1. （度量） measure 2. （估量） estimate; size up
- 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
- 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
- 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
- 矩 : 名詞1. （畫直角或正方形、矩形用的曲尺） carpenter's square; square2. （法度; 規則） rules; regulations 3. [物理學] moment
- 重量 : weight; scale; heft
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It has been derived the design equation, the engaging condition and the formula of overriding friction torque. this has laid an important theoretical foundation for further reliability optimum design. then we can make the clutch have small size, light weight, less friction, flexibility of overrunning in opposite direction and smooth joint at high speed
本文吸收了機械操縱式超越彈簧離合器的優點，在結構上進行了新的設計，在理論研究上進行了新的探索，推導出了設計方程、自激接合條件和超越摩擦力矩計算式，為進一步採用可靠性優化設計奠定了重要的理論基礎，使設計的離合器尺寸小、重量輕、摩擦損失小，反向超越靈活，在高速下接合平穩，並通過實驗驗證，說明其理論分析是正確的。The article describes the shape of wind load on the radome surface and analyzes the internal force of the radome with nonmomental theory of shell, stresses and stability with theoretic formula, equivalent modulus of elasticity and thickness of a - sandwich - composite structure
摘要針對雷達罩易受風荷載作用發生破壞的情況，本文從截球形雷達罩表面的風荷載分佈形態出發，採用無矩理論對雷達罩內力進行了分析計算，從理論上對模型進行了強度和穩定性分析，並著重闡述了a型復合材料夾芯結構的等效彈性模量和厚度的計算方法。But, though considerable process has been made in the last ten years, digital watermarking is still in its infancy, and much interesting work remains to be done this thesis addresses some problems in the gray - scale image digital watermarking that are summarized below : 1 ) whereas the basic theory of digital watermarking is still very poor, a digital watermarking mathematic model based on imperceptibility and robustness is presented by analysising the characteristic of digital watermarking ; 2 ) based on the model constructed above, by defining the measures of capacity and robustness of digital watermarking, an objective method for evaluating the digital watermarking is introduced and used to analysis some algorithms ; 3 ) whereas geometric distortion always influences the restoration of watermark, we advocate to enhance the robustness against geometric distortion by restoring the image which has been distorted by geometric transformation, and a method is designed for estimating the parameters of geometric transformation ; 4 ) based on the conclusion discussed above, and combined with the masking effects of hvs, a novel public meaningful gray - scale image digital watermarking is designed by analysising the characteristics of image gray - scale interpolation and haar wavelet transformation. the experimental results show that the method is indeed powerful ; 5 ) whereas many image digital watermarking schemes, which embed watermark by modifying the values of pixels in spatial domain and transformed domain, are confronted with the conflict between the imperceptibility and robustness, we advocated to use some stable digital characteristics of host image as watermark and a algorithm based on hermite matrix is designed
本文重點對灰度圖象數字水印技術進行研究，主要工作如下： 1 ）鑒于目前數字水印的理論研究比較薄弱的現狀，本文通過分析數字水印的特點，建立了一個數字水印的數學模型，為進一步研究數字水印打下了基礎； 2 ）根據以上建立的模型，通過引入容量和穩健度的概念為數字水印提供了一個客觀評價方法，並對一些數字水印演算法進行了分析； 3 ）為增強數字水印抵抗幾何攻擊的能力，研究了受幾何攻擊的圖象的復原問題，並給出了一個計算圖象幾何變換參數的方法； 4 ）通過分析圖象灰度插值演算法和haar小波變換的特點，結合hvs的掩蔽效應，設計了一個公開的有意義數字水印演算法，實驗結果表明本演算法具有較強的穩健性； 5 ）目前許多水印演算法都是通過在空域或頻域修改象素值的方法嵌入水印的，這種方法面臨著透明性和穩健性的矛盾，為解決這個矛盾，本文提出以圖象的某些穩定的數字特徵為水印的觀點，並結合hermite矩陣的特點設計了相應的水印演算法，實驗結果表明該演算法具有較好的穩健性。
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