geometrical characteristic 中文意思是什麼

geometrical characteristic 解釋
幾何特徵
  • geometrical : adj. 1. 幾何學的，幾何圖形的。2. 按幾何級數增長的。adv. -rically
  • characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
  1. Long - hole and geometrical proportion type of mixing unit is finally adapted in lpg supply system, and power and torque output of lpg engine are improved by increasing compression ratio, and ignition characteristic is tried to adjusted to satisfy engine performance. meantime emission performance and noise level of lpg engine at full - throttle and other various part - throttle operations are tested and compared with former gasoline engine. ( 3 ) it is verified by engine dyno tests that lpg engine has better synthesized performance at aspects of power and torque, fuel economy, as well as emission than former gasoline engine

    選擇了等比例長孔式混合器控制空燃比；通過提高壓縮比來彌補動力性的損失；以動力性為主控目標，對最大功率點、最大扭矩點、中等轉速、最低轉速點所對應的發動機轉速做了點火特性的調節；通過空燃比的合理控制，直接改善發動機的動力性、經濟和排放指標；作為對缸內燃燒過程的理論分析，進行了燃燒特性的實驗測試；對原汽油機和新開發的液化石油氣發動機，進行了外特性和部分負荷特性以及怠速的排放及噪聲對比性測試。
  2. In this paper, we combine normalized pattern spectrum, relative mome - nts and geometrical characteristic with artificial neural network to achieve classify and recognize the chart of axes track

    本文主要介紹了以歸一化數學形態學譜、相對矩和形狀參數為特徵，結合人工神經網路實現對軸心軌跡的自動識別和分類。
  3. According to the geometrical characteristic of the arch dam shape, and based on the parameter design language of ansys software ( apdl ), the subp method and the stochastic search method are adopted together to optimize design of hyperbolic arch dam with variable thicknesses of the circle

    摘要根據拱壩體形的幾何特徵，基於ansys軟體的參數化設計語言（ apdl ） ，將零階近似方法和隨機搜索法結合起來對單圓心變厚度雙曲拱壩進行了優化設計。
  4. Abstract : the threshold algorithm of the target detection is often used to detect target echo signals. its performance is based on signals - noise ratio. when signals - noise ratio is great than 6. 7, the target can be detected. in order to increase the signals - noise ratio, matching filter is often used. if the system is narrow band system, the noise is color noise and matching filter cannot be used. therefore, the signals - noise ratio cannot be increased. however, the geometrical characteristic of the laser echo signal is different with the noise. this paper advises the algorithm that detects the target by the geometrical characteristic. when signals - noise ratio is great than 2, this algorithm can detect target. this algorithm has been used in practice

    文摘:目標檢測的閾值法經常用於檢測目標的回波信號.它的性能取決于信噪比，當信噪比大於6 . 7時，能夠檢測出目標.為了提高信噪比，經常採用匹配濾波器.如果系統是窄帶系統，噪聲為色噪聲，無法使用匹配濾波器，不能提高信噪比.激光回波信號的幾何特徵不同於噪聲.提出了一種利用這種幾何特徵檢測目標的演算法.當信噪比大於2時，該演算法能夠檢測出目標.該演算法已經實際應用
  5. In this paper, firstly, three - dimensional geometrical models of the target and ir flares are established and by using the software vega missile attacking process is real - time simulated visually. secondly, the ir radiation characteristic of the target, background and the ir flares are analyzed, in which the wave radiation of the sun at different time, wind speed, the relative humidity and ir radiation attenuation characteristic of the atmosphere is under consideration. from above the ir image of the target, ir flare and the background are got and then are normalized to gray color image that will be showed in a child window in real time

    本文通過三維建模工具creator建立目標、背景和干擾的三維模型，再通過視景模擬軟體vega生成載機、導彈和目標飛機的可見光場景圖像，實時地對導彈攻擊工程進行可視化模擬；並分析了目標、背景和干擾的紅外輻射特性，計算出傳感器路徑上大氣衰減等等，將經過衰減的目標、背景和干擾的輻射強度量化為灰度圖，以子窗口形式實時顯示；進一步可以使目標和干擾按照各自的運動軌跡運動，便可產生動態的紅外熱圖像序列。
  6. Using basic equations in continuum mechanics, the wave - motion equation in the geometrical nonlinear elastic rod is derived, and then the characteristic curves and their characteristic relations are deduced by the characteristic line method, and the alterations of the wave profiles are analyzed during propagation

    利用基本方程導出了彈性細桿的幾何非線性波動方程，用特徵線法求得它的特徵線和特徵線上的相容關系，分析了波形在傳播過程中的變化規律。
  7. Furthermore using the variation principle in the elasticity, the wave - motion equation is derived in the finite deformation elastic thin rod with viscous and transverse inertia effects, and the characteristic curves and their characteristic relations are obtained by characteristic line method, and the influence of viscous and geometrical - dispersive effects on the propagation of wave is analyzed

    再利用彈性力學中的變分原理，導出了同時計及粘性和橫向慣性效應時的彈性細桿的幾何非線性波的波動方程，用特徵線法得到它的特徵線和特徵線上的相容關系，分析了粘性耗散和幾何彌散效應對波的傳播速度的影響。
  8. By discussing in detail the shapes and types of pump characteristic curves and the effects of geometrical parameters on them, this paper points out that the main reason of the brake horsepower of the low specific speed sewage pump increasing with capacity rapidly is that we often select larger geometrical parameters such as b2, ft and so on to enhance the capacity of the sewage pump

    詳細討論了離心式排污泵特性曲線的形狀和種類，以及幾何參數對排污泵特性曲線的影響，指出排污泵設計中增大b _ 2 、 f _ t等幾何參數是導致軸功率曲線隨流量增加上升很快的原因。
  9. Based on the nonlinear model, the dynamic characteristic is simulated, by considering the influence of the environmental and geometrical factors, such as oil modulus, chamber volume etc. in chapter 5, the dynamic mathematical model of the whole system is constructed considering the influence of vfvs electrical motor

    第五章，給出了考慮變頻電機后整個系統的數學模型，對其動態浙江工業大學碩士學位論文特性進行動態模擬，同時就系統各參數對系統工作特性的影響作了仔細分析。
  10. Firstly, the structure ' s geometrical design parameters are expressed with the discrete design variables. secondly, the structure ' s mechanical model that based on the elastic material mechanical characteristic and a certain enclasped state and enclasped thinking of multi - layers " shell is established

    首先給出描述組合圓筒裱糊裝配結構幾何狀態的幾何特徵參數的定義，以及幾何特徵參數與設計變量即彈性墊層厚度之間的幾何關系。
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