envelope method 中文意思是什麼

envelope method 解釋
包跡法
  • envelope : n. 1. 信封；紙袋；包封，封皮。2. 殼層，外殼。3. 【數學】包（絡）線；包跡。4. 【航空】氣囊；【天文學】包層；【生物學】包膜，包被。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. The gearing machine tool of the model y3150e is modified and a new milling head is designed to cut the envelope tooth of the pinion using allelomorph method. a assembled drawing of clamp for cutting the tooth shape of circle - arc gear is also presented

    對y3150e型滾齒機進行改造，設計出一新型的銑削頭，利用對偶法加工小齒輪的圓弧包絡線齒形；同時也給出了加工大齒輪圓弧齒形的夾具裝配圖。
  2. Abstract : considering the second nearest - neighbor interaction and cubic, quartic anharmonic interactions simultaneously, we employ the multiple scales method combined with a quasidiscreteness approximation to calculate the lattice vibration. it is shown that the kind of nonlinear chain exhibits envelope soliton, envelope kink and envelope antikink soliton. these results can also be used to explain the experimental phenomena that the kink amplitude of the self - localized structure is determined only by the intrinsic properties of its lattices

    文摘:同時考慮次近鄰諧振相互作用和三次方、四次方非諧相互作用，利用多重尺度結合準離散近似方法去計算晶格振動行為，發現一維非線性點陣中存在包絡孤子及正扭結型包絡孤子、反扭結型包絡孤子，解釋了自局域結構的幅度只取決于點陣中的固有參數的實驗現象
  3. At the same time the result of 2d simulation with dendrite envelope tracking method has been presented

    同時給出了用枝晶包膜跟蹤法計算的二維凝固模擬結果。
  4. ( 5 ) digital holograms of static particles and particle field ( multi - layer ) are recorded in the experiment. and the reconstructed particle images are gained using the envelope method with two different reconstructed waves - plane wave and spherical wave, respectively

    （ 5 ）從實驗上拍攝了單層靜態粒子靶和多層靜態粒子靶的數字全息圖，並分別用平面波和球面波實現了該模擬粒子場的數值再現，得到了清晰的粒子像。
  5. Abstract : this article discussed the causes of errors in nc program of machining screw using non - instant center envelope method. an analytical method to check the accuracy of nc program has been given, thus the theory basis of improving nc program has been provided in this article

    文摘:對目前常用的無瞬心包絡法螺桿加工數控程序中產生誤差的原因進行了分析研究，提出了一種校驗數控程序精度的分析方法，為改進數控程序提供了理論依據。
  6. The harmonic balance simulation and envelope simulation are applied in the cad progress of pulse oscillator, the results of simulation are listed, and the output signal of pulse oscillator is analyzed by mathematical method

    以脈沖振蕩器的cad為例，對脈沖振蕩器分別進行諧波平衡模擬和包絡模擬，列出了模擬結果，並對脈沖振蕩器輸出信號進行數學分析。
  7. On the basis of these, a simplified iced aerodynamics model is established, describes the effects of aircraft icing on aerodynamic parameters. main principle and implement method of iced aircraft envelope protection system are proposed. after ascertain iced aircraft envelope, for pilot and autopilot, open - loop and close - loop aircraft envelope protection control law respective designed, ensure the aircraft will efficiently follow the flight path specified by the pilot in the safe - flight envelope

    在此基礎上，建立了簡化的飛機結冰氣動模型，以描述結冰對氣動參數的影響;給出了結冰飛行包線保護系統的基本原理及實現方法，在計算確定結冰飛行包線后，對於人工駕駛、自動駕駛飛行兩種情況，分別設計了開環、閉環飛行包線保護控制律，保證飛機在安全飛行包線內沿著預定的航線飛行。
  8. Based on object - oriented analysis and design, this paper discussed the basic theory of computer graphics, visual simulation method, non - instantaneous pole envelope method about cnc machine and the three - dimension graphics modeling method. with triangle graphic element as the basic modeling tool we developed simulation system that cnc machine manufactured special shape screw pole

    本文以面向對象分析和設計為基礎，對計算機圖形學基本理論、可視化模擬方法、數控機床無瞬心包絡加工方法和三維圖形造型方法進行研究，利用三角形圖元作為基本的造型工具，建立了數控機床加工異形螺旋桿的模擬系統。
  9. However, the technology of manufacture about helical rotor is always the key problem, which blocks its development off since 1994, the cnc research center in shenyang university of technology has pursued research on complex special helical pole. it firstly put forward the non - instantaneous pole envelope method in china, and pursued systemic research on the theory of envelope method and nc programming method, then acquired a lot of achievements. therefore in this thesis the main job is the simulation model built on basis of non - instantaneous pole envelope method and the three - dimension graphic dynamic simulation system

    從1994年起，沈陽工業大學數控研究中心即對復雜異形螺旋面加工進行攻關研究，在國內首先提出了無瞬心包絡加工方法，並對其包絡加工原理、數控編程方法等多方面進行了系統的研究並取得了一定成果，本文的主要工作即是以無瞬心包絡法加工過程為基礎建立的模擬加工模型和三維圖形動態模擬系統。
  10. A method for high sensitivity envelope detection of uwb pulse signals

    一種高靈敏度的超寬帶脈沖信號包絡檢測方法
  11. Wavelet analysis is used to translate noise signal of the engine into time - frequency domain. selecting appropriate frequency band to pick up and making its envelope spectrum, then two feature frequency - 0. 5x speed frequency and 2x speed frequency that represent the abrasion condition can be found. in addition, a new diagnosis method of image processing technique is proposed

    利用小波分析將測得的機體噪聲信號變換到時頻域，選擇合適的頻帶加以提取並進行包絡譜分析提取包含特徵頻率的包絡，通過分析提取后的0 . 5倍頻和2倍頻分量，發現兩個特徵頻率可準確反映主軸承的磨損狀況。
  12. By means of the data envelope analysis method, this paper appraises and analyzes 15 listed tourism companies ' operation efficiency, pure technical efficiency and scale efficiency in 2005

    論文中利用數據包絡分析方法對我國15家旅遊業上市公司2005年的運營效率、純技術效率以及規模效率進行了評價和分析。
  13. The results indicate that the envelope method is more effective in actual application. and the recording distance limitations due to the stated pixel number, pixel size and laser wavelength are discussed in detail

    通過對圖像采樣的分析，結合採樣定理，給出了當圖像像素總數、像元尺寸、記錄波長都確定時，對衍射距離的限制條件。
  14. In this thesis, a internal and external analyse and research about design, modeling and machining of ball - end cutters is reviewed. on the base of grinding trait of mk6335a five - axis numerical control drill grinder, in the present study, differential geometry, ruled surface concept, envelope and inverse - envelope theory, coodinate transfer and numeric analyse are used to develop a mathmatical model and systematic method for the design, analyse and simulation of ball - end cutters

    本論文在國內外關于球頭立銑刀設計、建模、加工等方面研究的基礎上，根據現有的mk6335a五軸數控鉆尖磨床刃磨運動的特點，應用微分幾何、包絡與反包絡理論、坐標轉換、數值分析等理論知識，研究了基於五軸數控磨床加工球頭立銑刀的數學模型及分析與模擬。
  15. Standard test method for thermal performance of building materials and envelope assemblies by means of a hot box apparatus

    用高溫實驗室法測定建築材料和包裝組件熱性能的標準試驗方法
  16. The theoretical s - transfer function of ground - coupled envelope is deduced by laplace transformation. a simple polynomial s - transfer function is estimated from the theoretical frequency response of the ground - coupled envelope by frequency domain regression method, then we can calculate transient heat conduction through the ground - coupled envelope. it provides a novel idea to calculate the transient heat transfer from ground - coupled envelope more simply and efficiently

    用頻域回歸方法求出觸地結構多項式s -傳遞函數，通過實例驗證了多項式s -傳遞函數與理論傳遞函數的等價性，並計算出觸地圍護結構的反應系數、導熱z傳遞函數系數和地面瞬時熱流，這就為更簡單、高效地計算觸地結構動態傳熱提供了一種新的思路。
  17. The method can measure the following parameters, ( pulse attitude ) pa, ( pulse width ) pw, ( time of approach ) toa, snr, ( radio frequency ) rf, pulse envelope characteristic parameters and intra - pulse modulation parameters with a high precision and a high discrimination

    該演算法能夠分析雷達信號的脈沖脈幅、脈寬、到達時間、信噪比、載頻、脈沖包絡特徵參數和脈內調制特徵參數。
  18. Mtcem ( multi - tone envelope method ) can accurately forecast performance parameters on a set of stored channel and directly decide usable frequency choice. as hf channel characteristic is closed to gauss, mtcem may be simplified to multi - tone envelope method rtce system. for certain user ' s request and link status, double tone complex envelope method rtce, double tone envelope rtce, adaptive hf channel sounding and communication system, all that can easily derived from mtcem

    多音復包絡實時選頻系統，當通道特性近似於高斯通道時，整個系統可以簡化為多音包絡法實時選頻系統，針對不同的用戶要求和電路通道狀況，很容易由它派生出較為簡單的系統，如雙音復包絡法實時選頻系統，雙音包絡法實時選頻系統，短波自適應通道探測和通信系統。
  19. The main contents of this thesis are : ( 1 ) two numerical reconstruction methods - direct fourier transform method and envelope method, are presented. these methods are deduced on the base of fresnel diffraction integral formula, which is under the condition that particle field is illuminated by plane wave

    主要工作內容有： （ 1 ）分析推導了平面物菲涅耳衍射的兩種常用數值實現演算法，即直接傅里葉變換法和卷積法，結論表明後者更符合實際工作的要求。
  20. Rtce is based on forecasting the inherent vulnerabilities to propagation of hf time - varying channel, including multipath delay, doppler spread, selective fading, interference, so this paper also introduces characteristics of hf channel in the beginning. familiar rtce systems all adopt envelope method that bello brought forward

    實時選頻技術是基於對短波電離層時變通道固有的不利於電波傳播的各種因素，包括通道的多徑展寬、多普勒展寬、選擇性衰落、噪聲干擾等的預測的基礎上實現的，所以在開篇對短波通道的特點進行了詳細的介紹。
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