Since the dichromated gelatin has a higher diffraction efficiency in all holographic recording materials, the aim of this research is to use dichromated gelatin as the recording material and to make use of the principle of holography to design holographic optical components, especially in fabrication procedure of dichromated gelatin film and in experimental technique to form a high diffraction efficiency using different angular exposure method
為了產生優質的聚焦能力與效率,本研究採用目前具有最高繞射效率( 80 ~ 90 % )的重鉻酸明膠材料作為感光劑,除了自行調制藥劑比例成分,並依嚴格的製作步製成重鉻酸明膠全像片外,並採用不同角度重覆曝光方式改良干涉式
波帶板無法自動追蹤的缺點,經過多次試驗與改進,藉以形成具備高繞射效率和自動追蹤功能的全像光學
波帶板。
In this paper, by checking up the heat calculation about the experiment results of the single row tube and double waves belt, i come at the function of the heat transfer factor j and the reynolds number re, i also come at the function of the f r i ct i on factor ^ " and the reyno i ds number re
本文還通過對單排雙
波帶散熱器的實驗結果進行校核熱計算,回歸導出該種散熱器的傳熱因子j及摩擦因子f與雷諾數re的數學表達式,從而為用這種芯子根據廠家要求設計散熱器提供了理論依據。
In practice, changing the belt wavelength, comparing the heat transfer performance of the single row tube and single wave belt with the single row tube and double waves belt, double row tubes and double waves belt, three row tubes and single wave belt, i draw a conclusion that the single row tube and double waves belt is the best
在實踐上,通過改變翅片
波距w ,比較單排單
波帶、單排雙
波帶、雙排雙
波帶及三排單
波帶散熱器的傳熱性能,得到單排雙
波帶傳熱效果最佳的結論。
Compared with the three row tubes and single wave belt which is the old production of the baling factory, the heat transfer capacity of the single row tube and double waves belt can increase 7
單排雙
波帶與八菱廠老產品三排單
波帶相比散熱量q可增加到7 . 5左右,風阻減小到13 . 8左右。
A specific range of wavelengths or frequencies of electromagnetic radiation
波段,
波帶電磁輻射的
波長和頻率的特定范圍
It is necessary to study the mechanism of harmonics generation, make sure the content and distribute of harmonics current in order to alleviate their harm to traction power system ' s component, equipments of protect and measure as well as other customer ' s electronics equipments
為了從根本上抑制電力牽引負荷諧
波帶來的影響,削弱諧
波對牽引供電系統主元件、保護測控裝置和其他用戶電子設備的影響,有必要研究電氣化鐵道牽引諧
波產生的機理,確定饋線電流諧
波的含量與分佈狀況。
And such zones act as an important dynamic condition for low - level water transfer and also a favorable environmental condition for " seeding - water supply ". there stronger echoes are detected, meaning that bubble convection develops in the precipitating fields of the clouds that are homogeneous in the main, causing centers of > 10 mm / hr surface rainfall to occur and migrate
這些不穩定區是低層水汽輸送摘要重要的動力條件,也是「播撒一供應」機制發生的有利的濕熱力環境條件,雲系較強降水回
波在這里得到發展,使整體均勻的冷鋒層狀雲系降水場有較強回
波帶和對流泡發展,
帶來地面有> 10mmlh較強降雨中心產生和移動。
This structure possesses common spectra gaps with transverse - electric surface waves and transverse - magnetic surface waves, a multiple of in phase frequency regimes to characterize magnetic resonances are also within those spectra gaps, which were detected both by measuring return loss of an antenna near the surface and by fdtd simulations
實驗和數值模擬顯示這類表面的橫電模式極化和橫磁模式極化的表面
波具有多
帶隙的豐富能
帶結構,同時它還有多個磁性諧振頻率,實驗和理論顯示這些磁性諧振所對應的多個同位相反射區落在兩個表面
波帶隙中。
Comparison of amplitude vector method and half - wave spectrum method to analyze grating diffraction
振幅矢量法與半
波帶法分析光柵衍射的比較
Cooperation with the universities and colleges widely, such as sichuan university, zhejiang university, zhejiang university of technology, etc. established long design research item. mainly products are : tv - if saw filters for color tv sets and b / w tv sets, cordless phone saw filters, saw resonator and all kinds of low insertion saw components in the communication
公司與四川大學、浙江大學、浙江工業大學等大專院校建立長期的科研合作關系,主要設計開發的產品有:電視中頻聲表面
波濾
波器、無繩電話聲表面
波雙工器、廣泛應用於通信領域的聲表面
波諧振器和各類低插損聲表面
波帶通濾
波器。
The interferometric zone plate is the essential of hoes, which is the interference between plane wave and sphere wave, can focus the light beam by diffraction, instead of the way which conventional lens or concave mirrors do
摘要干涉式
波帶板系由平面
波和球面
波兩道光
波干涉而成,為研究全像光學元件的基礎,其可經由繞射作用達到聚焦效果,猶如使用傳統凸透鏡或凹面鏡所產生的效果。
At first, the fundamental theories and realization methods of main parts of high purity frequency source in x band object simulator of vehicle - carried phased - array radar, such as phase - locked - loop, step recovery frequency multiplier, dielectric band - pass filter and micro strip band - pass filter are introduced in detail in this paper
本文一開始洲門針對機載相控陣雷達目標模擬器中的高純本振源的實現,詳細地介紹了瑣相環、階躍管倍頻器、介質
帶通濾
波器和微
波帶通濾
波器的基本原理及其實現方法。
Type sbp301, filters, surface acoustic wave band - pass, detail specification for
Sbp301型聲表面
波帶通濾
波器詳細規范
Wave band filter
波帶濾
波器
Spectral anomalies of the fully, spatially coherent light diffracted by a fresnel zone plate
菲涅耳波帶片衍射產生的光譜奇異現象