方向性函數英文怎麼說
方向性函數 的英文翻譯
方向性函數 英文 directivity function 方 : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ... 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ... 函 : 名詞1. [書面語] (匣; 封套) case; envelope 2. (信件) letter 3. (姓氏) a surname 數 : 數副詞(屢次) frequently; repeatedly 方向 : direction; orientation 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
方向性函數 例句
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Aiming at the study actuality of fan performance monitoring system and analysis of fan performance curve changes affected by inlet - box and the different fixed - angles of guide blades in the course of installation, a fan flow monitoring model based on rbfnn in whole flow zone was established in this thesis. in the model, the method of no throttle and fan performance curve were used as basis. and on the basis of that model, fan performance curves of 4 - 73no. 8d were approached with experimental data of different speed, different opening - angles of guide blade and different resistance of pipeline, the precision and the error law of model were studied
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The result shows that the pbg structure has obvious character of forbidden band at the suitable size, and can be designed to good performance microwave filter. the pbg structure have the character of high resistance, that can reinforce the forward radiation, and reduce the backward radiation, increase the directivity, improve the gain and ameliorate the performance of the antenna. in addition, the pbg structure can also greatly increase the isolation and significantly decrease the coupling between the antenna elements研究結果表面,取合適的尺寸時, pbg結構具有明顯的禁帶特 性 ,可以設計成 性 能良好的微波濾波器; pbg結構具有高阻特 性 ,把這種特 性 用於微波天線時, pbg結構可以加強前 向 輻射,減小後 向 輻射,增大天線的 方 向 性 系 數 ,從而提高天線的增益,改善天線的 性 能,另外, pbg結構還可以大大提高天線單元之間的隔離度,顯著減小天線單元間的耦合。
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Its band structure is analyzed. after the working frequency is selected, the meta - material cover increases the patch antenna ' s directivity by 9. 14db在選定的工作頻率,異 向 介質覆層將貼片天線的 方 向 性 系 數 提高了9 . 14db 。
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Its size is small ( with an unit length of about 23. 7 % of the wavelength in the cover medium ), and its effectiveness is evident ( the patch antenna ' s directivity is increased by 3. 16db )這種結構具有尺寸小(邊長僅為介質中波長的23 . 7 ) 、效果明顯(將貼片天線的 方 向 性 系 數 提高了3 . 16db )的優點。
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Combining this pmc structure with the pbg cover maintained above, a new patch antenna with a pmc substrate and a pbg cover has been introduced for the first time. such a structure can increase the directivity more effectively ( the directivity is increased by 7. 3db ). 4結合這種pmc結構和第2點中提到的pbg覆層,首次設計出了具有pmc基底與pbg覆層的新型貼片天線,對 方 向 性 改進效果更加顯著(將貼片天線的 方 向 性 系 數 提高了7 . 3db ) 。
方向性函數 的相似字
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