envelope principle 中文意思是什麼

envelope principle 解釋
包絡原理
  • 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。
  • principle : n. 1. 原理，原則。2. 主義；政策；〈常 pl. 〉道義；節操。3. 本質，本體，根源；本原，源泉。4. 本性，本能；天然的性能；天賦的才能；動因，素因。5. 【化學】素，要素；精。
  1. 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。
  2. The paper mainly discussed the pki foundation technology knowledge and the concept, discussed the base knowledge and the basic principle of the modern cryptography. the article introduced and compared main algorithm characteristic, the speed, the encryption intensity of each kind of encrypt. elaborated the public key system in the pki system application : digital envelope, digital signature, as well as digital certificate definition, form and use

    論文主要論述了pki基礎技術的一般知識和概念;討論了現代密碼學的基本知識和基本原理;對各種加解密演算法的主要特點、速度、加密強度進行了簡要的介紹和比較;論述了公開密鑰體制在pki體系中的應用:數字信封、數字簽名，以及數字證書定義、格式及用途。
  3. By theory and practice simulation, the several types of constant envelope modulation techniques are analyzed and compared, including theirs modulation principle, phase path, the modulated wave envelope, power spectrums, error bit rate and the influence of its power spectrums of the band - limited and non - linear, etc. especially we have researched the ijf - oqpsk modulation technique, and the performance of its inter - symbol interference and time jitter free, and its strongly resisting of spectral spreading

    結合理論和實驗模擬結果，分析討論了衛星通信中的各種恆包絡調制技術，對它們的調制原理，相位路徑，已調波包絡，功率譜密度，誤碼性能，以及帶限非線性通道對其功率譜的影響等方面都作了研究和比較。特別研究了ijf ? oqpsk在消除碼間干擾和定時抖動方面的性能及其優良的旁瓣特性和抑制頻譜擴展特性。
  4. Next, the soft method based on the dirichlet principle is given in detail. emphasis is put on the pattern of power addition along its main meridian line and the construction of the envelope of the nonrotationally symmetrical aspheric surface

    其次，應用基於狄利克雷原則的軟設計方法，重點闡述子午線光焦度漸增曲線形式和漸變包絡面的構造方式。
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