船輻 的英文怎麼說

中文拼音 [chuánfú]
船輻 英文
beam of ship
  • 船 : 名詞1. （水上的運輸工具, 船舶的通稱） boat; ship; vessels 2. （姓氏） a surname
  • 輻 : 名詞（車輪中車轂和輪圈的連接物） spoke
  1. Above all, the system fuse the eradiate noise ' s different sides " feature and offer strong elements for the next process : classifying. it is very important to study the classifier in this dissertation

    其中線譜特徵反映了船舶輻射噪聲的頻域信息，能量特徵綜合了不同頻段內的信息，而分維特徵反映了信號的時域的信息。
  2. The process of feature extraction is to transform the eradiate noise signal to different feature space and extract the feature vectors that reflect the category of the input sample. the extracted features are the input modes to the classifier

    特徵提取的過程是把輸入的船舶輻射噪聲信號變換到不同的特徵空間，提取出反映樣本的類別特性的特徵向量，並把其作為分類器的輸入模式。
  3. This method applies the extended strip theory to establish the nonlinear ship motion equations in regular head seas, obtains stable time course by resolving in time domain, and then pressure vectors will be available. the pressure includes static pressure, incident waves pressure, diffraction pressure, radiation pressure, and wave impact pressure, and changed with instantaneous draft of each intersection

    該方法應用擴展的切片理論建立迎浪規則波中船舶非線性運動方程，通過時域步進求解獲得船舶剛體運動的穩定時歷，進而給出與船體各橫剖面瞬時吃水相對應的靜水壓力變化、入射波壓力、繞射壓力、輻射壓力和波浪沖擊壓力諸分量。
  4. A many comely nymphs drew nigh to starboard and to larboard and, clinging to the sides of the noble bark, they linked their shining forms as doth the cunning wheelwright when he fashions about the heart of his wheel the equidistant rays whereof each one is sister to another and he binds them all with an outer ring and giveth speed to the feet of men whenas they ride to a hosting or contend for the smile of ladies fair

    眾多俊美的寧芙611忽而挨近右舷，忽而湊近左舷，依依不捨地跟在華貴的三桅帆船兩側。她們將閃閃發光的身子盤繞在一起，猶如靈巧的輪匠在車輪的軸心周圍嵌上互為姐妹的等距離的輪輻，並從外面將所有一切都用輪輞把她們統統箍住。這樣就加快了男人們奔赴沙場或為博得淑女嫣然一笑而爭相趕路的步伐。
  5. The longest apollo mission, though, lasted no more than 12 days, and samples were kept within the apollo spacecraft and thus not exposed to the full space - radiation environment

    不過，為時最長的阿波羅任務不過12天，標本又保存在阿波羅宇宙飛船艙內，因此並非完全處于宇宙輻射的環境之下。
  6. The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly, the research creates and solves the ship large amplitude motion equations. on the one hand, the actual calculation takes into account the coupling between the different motion modes, on the other hand, in the process of calculation of the ship hydrodynamic coefficient, it considers the influence of the nonlinear factor. the hydrodynamic coefficient used in the calculation of froude - krylov force, diffraction force and radiation force changes instantaneously following the draft, and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull

    本文的研究分為二個部分：首先利用frank源匯法計算水動力系數，計算包括不同吃水時的附加質量和阻尼系數，吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水；然後建立和求解船舶大幅度運動方程，在實際計算時一方面考慮了運動模態之間的耦合，另一方面在計算水動力時，考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數隨吃水瞬時變化，靜浮力的計算精確到船體瞬時濕表面積，最後用四階龍格?庫塔方法在時域內求解船舶運動方程，並進行了載荷計算。
  7. After solution of radiational and diffractional fluid field of asymmetrical sections by applying the multipole expansion method, wave loads on damaged ships are calculated by the linear strip theory under the non - upright floating condition, taking the effect on the heel angle and trimming angle caused by the damaged tank inundation below waterline into account

    然後採用線性切片理論，計及水線以下破損后船舶由於艙室進水產生的橫傾角與縱傾角的影響，利用多級展開法求解非對稱剖面的二維輻射和繞射流場，計算了破損船體非正浮狀態條件下的波浪載荷。
  8. The most obvious theory was that something on the spacecraft themselves created a braking force ? leaking gas or heat radiation, perhaps

    最直接的理論認為，是太空船上的某樣東西，或許是氣體外?或是熱輻射，製造出的煞車力。
  9. Hazards and protection of shipboard electromagnetic radiation

    艦船電磁輻射危害及防護
  10. 2 ) the ship - radiated noise is studied by means of hos that includes bi - spectrum and tri - spectrum on the basis of analyzing the properties of the noise. then some features are extracted from bi - spectrum and tri - spectrum

    在對艦船輻射噪聲深入分析的基礎上，利用雙譜、三譜對艦船輻射噪聲進行了研究，指出了應用高階統計量的雙譜、三譜分析艦船噪聲的優越性。
  11. It can be learned by analyzing the ship radiated noise signals using nonlinear methods that the ship radiated noise signals are n ' t rigid fractal signals, but there are positive maximum lyapunov exponents, this indicates that the ship radiated noise signals are nonlinear

    通過對艦船輻射噪聲進行混沌特徵分析，結果表明，艦船噪聲不具有嚴格分形性，但具有正的最大lyapunov指數存在，這說明艦船噪聲信號中有非線性成分存在。
  12. The ship radiated noise is analyzed and its 4 features are extracted from the envelop spectrum. the envelope of ship noise waveform can be demodulated utilizing hilbert transform, and the spectrum components with line rotation frequency of propeller shaft are extracted effectively by bispectrum, 1 ( 1 / 2 ) spectrum and 2 ( 1 / 2 ) spectrum analysis

    對于通過希爾伯特變換解出的艦船輻射噪聲包絡信號進行高階統計量分析，有效地提取出了艦船噪聲的雙譜、 11 / 2維譜、 21 / 2維譜等方面的特徵。
  13. Feature extraction on frequency - domain of ships radiated - noise based on multiresolution analysis

    基於多解析度分析的艦船輻射噪聲頻域特徵提取
  14. Extraction and fusion of frequency - domain features from ship radiated - noise based on wavelet packet and - dimensional spectrum

    維譜的艦船輻射噪聲頻域特徵提取及融合
  15. The features are eventually calculated by the euclidean norms of the clusters. the combination of features extracted from wave structures, wavelet coefficients and frequency spectrum get better classification result than one kind of feature

    本文還提取了艦船輻射噪聲的波形特徵，包絡小波分解系數頻率特徵並與前述能量特徵相結合，取得了比單個類型特徵更好的分類效果。
  16. The main work and originality in this thesis can be summarized as following : 1. analysis of acoustic characteristics of ship ' s radiated noise both in time and frequency domain, especially its deviation from the ordinary statistical signal. studies on two modern signal processing methods - higher - order statistics ( hos ) and wavelet transform

    分析了艦船輻射噪聲的通過特性、調制特性、譜特性與線譜的特徵及應用，特別分析了輻射噪聲譜的「三非」特性；研究了基於高階譜分析和小波變換的艦船輻射噪聲特徵。
  17. 5. bring out a new way to determine whether a dynamic system is chaotic by using the model of the system. 6

    5分析了兒種系統混飩性判據的優缺點，提出基丁模型的系統混飩性判別方法； 6研究了艦船輻射噪聲的相空間重構。
  18. A novel signal processing method based on alternate feature optimization is introduced and analyzed in this thesis. and a new underwater target recognition system using the optimized feature and svm is presented here. the system utilizes the alternate feature extraction method to optimize the feature selection process

    提出了高階量1 （ 1 / 2 ）維譜和小波變換交互分析進行特徵提取的方法，比較好地反映了艦船輻射噪聲的非線性、非平穩和非高斯特性。
  19. And then, the mechanism of ship - radiated noise is analyzed

    然後分析了艦船輻射噪聲的產生機理。
  20. Ship - radiated noise recognition based on hidden markov models

    基於隱馬爾可夫模型的艦船輻射噪聲目標識別
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