directional characteristic 中文意思是什麼

directional characteristic 解釋
定向特性
  • directional : adj. 1. 方向的。2. 【無線電】指向的，定向的。
  • 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. In the study of directional spectrum and reflection coefficient of multidirectional wave, firstly the wave elevation trains overlapped by the incident wave and the reflected wave of multidirectional wave are simulated in the method of a frequency corresponding to a direction. then the composed wave trains are analyzed respectively by the mbdm and the mmlm. during the numerical study, the input factors include the various wave parameters, the different measuring wave system and the various reflect characteristic

    在多向不規則波入射波方向譜和反射系數的分析研究中，利用方向頻率對應法模擬了多向不規則波入射波與反射波疊加的波面序列，將此合成波列分別應用mbdm和mmlm進行分析，通過輸入各種波浪參量、不同波浪測量系統和各種反射特性等因子，檢驗了mbdm和mmlm方法的適用條件，對兩種分析方法的性能進行了比較分析。
  2. 1284 - 1994 improves the rate of data transfer of parallel interface greatly and provides bi - directional data transfers it makes the demand for data is no more the bottleneck of peripheral performance at the same time, due to the characteristic of bi - directional data transfer, the host can identify the mode of peripheral sc the problem of mistake operation on unsupported device can be avoided

    Ieee1284 - 1994標準使并行介面的數據傳輸速度得到了極大的提高，並且支持雙向數據傳輸。這使得對數據的需求量不再成為外設的性能瓶頸，同時由於雙向數據傳輸特性，所以主機能識別外設的型號，這樣就不至於對不支持的設備誤操作。
  3. By changing these parameters and the z - directional stiffness of the outer - ring, the stiffness and the damping characteristic of the damper can be varied

    在轉子系統支承中引入摩擦阻尼器能夠降低支承剛度，從而降低系統的臨界轉速，避開工作轉速。
  4. Standard lamp and diffusers are very important calibration elements, in chapter three, first uv and vuv radiometric standard for calibration are introduced. then the fabrication and characteristics of baso4 diffuser and alminium diffuser are researched, the baso4 diffuser ' s hemispheric reflectance and bi - directional reflectance distribution function were measured and compared with lambtian surface, and the deviation from that of lambtian surface is given. in the experiment, al diffuser ' s brdf is researched, obtain the change of spectral characteristic of al diffuser, compare al diffuser ' s brdf before and after coated with al + mgf2, and different al diffusers with different surface roughness

    鋁漫反射板作為一個漫反射光學元件安裝在太陽紫外光譜監視器的入射狹縫前，太陽紫外光譜監視器在軌測量時，太陽輻射入射到鋁漫反射板后進入入射狹縫，光譜輻照度的角度是變化的，本章測量了鋁漫反射的相對雙向反射分佈函數，研究了鍍膜（ al + mgf _ 2 ）前後光譜反射率的變化，漫反射的光譜特性及漫反射板表面粗糙度對相對雙向反射分佈函數的影響，使得測量數據反演成為可能。
  5. The twelve kinds of modes and equivalent circuits of this inverter with high frequency link within one high frequency switching period are carefully analyzed ; by using the state - space averaging approach, the inverter ’ s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given ; the analyses of the system stabilization and the mathematic analyzes of the principle of high - frequency - link of this inverter have also be done. prototypes for 1kva 270v 10 % dc / 115v400hzac uni - polarity phase shifting controlled bi - directional voltage mode inverter with high frequency link is designed

    以全橋橋式拓撲為例，論述了雙向電壓源型高頻環節逆變器單極性移相控制的原理、逆變器在一個高頻開關周期內的十二個工作模式及其等效電路;採用狀態空間平均法建立了逆變器平均模型，獲得了這類逆變器的關鍵電路參數的設計準則和外特性曲線;分析了系統穩定性，並對逆變器高頻環節原理進行了數學分析。
  6. The out - of - plane stability of bending beam, which is made up with 2 beams and loaded by non - directional force, is studied. the bending and torsional deflection differential equation of each beam is established in critical condition. according to compatibility conditions of deformation, the characteristic equation is obtained to calculate out - of - plane stability of the cantilever bending beam

    對兩節梁組成的彎曲梁在非保向力作用下的平面外失穩問題進行了研究，通過建立每節梁臨界狀態下彎曲和扭轉變形微分方程，根據桿件變形的邊界條件以及桿件之間的變形協調關系，得出了一端固定一端懸臂的彎曲梁在非保向力作用下平面外失穩的特徵方程。
  7. Test system of rocket artillery directional unit ' s electrical steering characteristic

    火箭炮定向器電動操瞄性能檢測系統研究
  8. The characteristic of its focal plate arrays and bi - directional scan make the calibration complex and challenging. the paper studies the pre - processing system, the systematically calibration algorithms and imaging evaluating system, completing the first integrated ground processing system of landsat7 in china

    針對整個landsat7的預處理成像、系統級校正過程，展開了本論文研究工作，完成了國內第一個完整的landsat7下行數據預處理成像及系統級圖像校正和評估系統。
  9. Using the directional characteristic of the positive direction explodes elongated charge, wavefront of the elongated charge in the explode location shown higher directivity is in - phase stacked, and also propitious for p - wave to explode and travel

    細長藥柱震源利用正向激發長藥柱的定向性特點，達到激發后的波前面在垂直向下的方向上是同相疊加的，顯示出很強的定向性，有利於縱波的激發和傳播。
  10. To be able to realize the continuous, speedy and bi - directional modulation is its main characteristic and plays a distinct role in stabilizing the power system

    Facts控制器的主要特點是能實現無功和阻抗的連續快速和雙向調節，對提高電力系統的穩定性具有顯著的作用。
  11. Dynamic causality diagram was first proposed by professor zhang qin in 1994, it is a mathematics tool combined with probability and graph theory, just like the belief network, its characteristic is to provide the method of uncertain knowledge representation and agility reasoning, it adopts nodes to represent random variables in the domain and directional edges between nodes to represent causal relationship between variables, linkage intensity to represent the strength of the link between these variables, it supports the forms of reasoning from cause to effect and from effect to cause and together

    動態因果圖由張勤教授1994年提出，它與信度網類似，是概率論與圖論結合的一種數學工具，其特點是提供不確定知識的表達和靈活的推理方法:用節點表示事件或變量，有向邊表示因果關系，並用連接強度來表示因果關系的強度，支持由原因到結果的正向推理方式和由結果到原因的反向推理方式以及正反向混合推理方式。
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