band index 中文意思是什麼
band index
解釋
帶指標-
( 4 ) the correlations are significant between the sth position index and the general circulation. in the westerly ( easterly ) year, equatorial westerly is weaker ( stronger ), cross - equatorial flow is weaker ( stronger ), south china sea summer monsoon is weaker ( stronger ), the yangtze river valley westerly is stronger ( weaker ), which has the positive ( negative ) effect on the maintenance of rain band over the yangtze river valley, so the rainfall is more ( less ) in this area and it is hit by floods ( droughts ), vice versa
（ 4 ）本文運用定義的副高指數研究了六月份副高偏東偏西年份的大型環流特徵及其對我國東部天氣的影響，風矢量場和相關場分析結果表明：副高偏西（東）年，赤道西風減弱（增強） ，越赤道氣流偏弱（增強） ，南海夏季風偏弱（強） ，而長江流域西風增強（減弱） ，有（不）利於雨帶在江淮流域維持，該地區降水偏多（少）易澇（旱） 。 -
Based on the band transport model, the formation of refractive index grating in photorefractive crystal is discussed firstly. then the characteristics of two - wave coupling, four - wave mixing and light - induced scattering are analyzed
本文主要從實驗上研究了cu ： knsbn晶體的自泵浦相位共軛特性及cr ： sbn晶體的四波混頻相位共軛特性及其應用。 -
This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。 -
The method of sds - page was used to analyse the electrophoretic band of their seeds, and compare corydalis adunca maxim. living in gannan area with three kinds of corydalis straminea maxim living in different environments. by the principle of the higher of the similarity index of protein, the similarer of their blood relationship, author thought corydalis adunca maxim. living in gannan is the similarest with corydalis straminea maxim living in lunzhong area. then analysing the alkaloids in corydalis adunca
對這兩種紫堇的種子進行了sds ? page凝膠電泳分析，根據蛋白質圖譜，比較了甘南灰綠黃堇與三種不同產地的草黃堇的蛋白質相似度指數，依據相似度指數越高，種間的親緣關系越接近的原則，認為甘南灰綠黃堇與隴中草黃堇的親緣關系較近。 -
This paper introduces the methods of hyperspectral images band selection based on the property of hyperspectral remote sensing images, utilizes the projection pursuit approach to find optimal solutions for a selected projection index based on dynamical evolutionary algorithm and then project a high dimensional data set into a low dimensional data space to produce a sequence of projection images, explores zero - detection method to threshold projection images to detect anomaly tar get
摘要運用基於波段間相關性的高光譜影像波段選取方法進行波段的預選取，採用投影尋蹤的方法在動力演化演算法的基礎上尋找最佳投影方向，將高維數據投影至低維數據空間，在各投影分量圖像上採用零點檢測閾值化的方法進行異常目標的提取。 -
Wang pushes off the seams of the ball with his index and middle fingers, creating the blisters, and after the game last night, he had a small band - aid covering the tip of his middle finger
王用他的食指和中指推出球的縫線，產生了水泡，昨晚比賽后，他用小片的護創膠布覆蓋在他中指的頂端。 -
This paper selects representative samples wuliangsu lake, yellow river, dongjuyan lake and ejina salina, after information is analyzed, using optimal band index oif index, spectrum characteristics curve and application scope of each band to select optimal bands. the result shows that band 3, 4, 5 are best ones and etm453 combination is the best after r, g, b composed. all this fit for western inner mongolia
根據西部區主要濕地類型本文選取烏梁素海、黃河、東居延海、額濟納鹽沼典型樣地，通過多光譜信息的統計分析，採用波段選取最佳指數oif指數並結合地物光譜特徵曲線、各波段主要用途進行最佳波段的選取，結果一致表明3 、 4 、 5波段是各典型濕地的最佳波段，可作為反映內蒙古西部濕地信息的最佳波段。 -
The band gap ' s broaden is apparent when the larger refractive index layer is graded
改變高折射率層的幾何厚度，光子帶隙的拓寬更為顯著。 -
Based on the requirement and target of the projects, firstly, pcf bragg grating are investigated theoretically and experimentally. moreover, the effects of filling high refractive index material ( nematic liquid crystal, nlc ) in pcfs on the transmission mechanism and propagation properties are studied by using plane - wave method and finite - element method ( fem ), farther, several novel pcfs are proposed and designed. lastly, we propose and demonstrate a clad - pumped er3 + / yb3 + - codoped fiber laser, which integrate all performances of broad - band tunable wavelength, uniform output power spectrum, high repeat frequency and high average power to together
本論文選題于國家973 、 863以及國家自然科學基金等項目，結合課題的要求和主要目標，在對光子晶體光纖（ pcfs ）傳輸特性研究的基礎上，首先對光子晶體光纖光柵進行了理論和實驗研究;然後，採用平面波展開法和有限單元法分析了在光纖的空氣孔中填充高折射率液晶對光纖傳導機制和傳輸特性的影響，提出並設計了幾種新型光子晶體光纖;最後，提出並研製成功連續可調諧、輸出功率譜均衡的全光纖化、高功率包層泵浦鉺鐿共摻光纖激光器實驗樣機。 -
The thesis also gives the concept of the electromagnetic density of modes ( edom ). the distribution features of edom in the band - edge of 1d photonic crystal are studied according to the computational results. the dispersive properties of 1d photonic crystal are discussed by introducing the concept of complex effective refractive index
闡述了一維光子晶體中電磁模密度的概念，由計算結果分析了電磁模密度在禁帶邊緣的分佈特點；用復有效折射率討論了一維光子晶體的色散特性。 -
And some relevant property parameters of waveguides are measured. based on the band transport model, the buildup of space charge field and the light - induced refractive index changes in photorefractive crystals are discussed
首先根據帶輸運模型的動力學方程組，討論了光折變晶體中光致空間電荷場的建立以及由此而產生的折射率變化。 -
Firstly, we study the photonic band structure of the pcf cladding with triangular and honeycomb air holes lattices. then the guided mechanisms of pcfs are demonstrated. the waveguide dispersion, leaky loss and effective modal area for both index - induce pcf and pbgf are presented
首先對三角形、蜂窩形柵格空氣孔包層結構的光子能帶進行了研究，在此基礎上闡述了光子晶體光纖的傳導機制，對折射率引導和光子帶隙引導光子晶體光纖的波導色散、泄漏損耗和有效模場面積進行了研究。 -
The roadside air pollution index reached the " very high " band nine times in february 1999
路邊空氣污染指數於1999年2月達到甚高水平有9次之多。 -
Their optical properties are characterized by z - can technique, uv - visible absorption spectrum and so on. the experimental results indicate that although large nonlinear refractive index is observed in two pbs / cds systems with different band gap, the sample of bigger band gap exhibit obvious nonlinear absorption in the range of nonresonance
另外，我們改變制備條件，得到了光學帶隙不同的pbs cds納米復合體系，並採用z -掃描技術研究了它們的非線性光學性質。兩個樣品都具有大的非線性折射率，但光學帶隙大的樣品在非共振區域表現出明顯的非線性吸收。 -
Standard practices for identification of material by infrared absorption spectroscopy, using the astm coded band and chemical classification index
根據astm編碼帶及化學分類索引用紅外線吸收光譜法進行材料的鑒別的標準規程 -
The correlation between broad - band spectral index and peak frequency for xbls and fsrqs
和平譜射電類星體間峰值頻率與光譜指數的相關性分析 -
The physical meaning of sensitive index for six worldwide representative models of crop response to water ( stewart a, jensen, minhas, blank, stewart band singh ) was analyzed based on multi - variable linear regression theory and was verified by a case study
結果表明，敏感指標是以作物水分響應模型所表達的統一回歸方程的偏回歸系數，反映回歸自變量（水分）對因變量（產量）的作用效應，故可度量作物對水分的敏感程度。 -
The index of the relationship between channel share for a specified time band compared to a reference time band for the same channel. note : user can specify both time bands
某一頻道特定時段的頻道佔有率與這一頻道參照時段的頻道佔有率之間的關系指數。注意：兩個時段都可由用戶指定 -
Colourless optical glass test methods - least deviation angular test method for refractive index in the ultraviolet and infrared wave band
無色光學玻璃測試方法紫外紅外折射率測試方法最小偏向角法 -
The photonic band gap of 1 - d photonic crystals with graded single refractive index layer is investigated using the method of the characteristic matrix
摘要利用特徵矩陣方法研究了一類周期厚度變化的維光子晶體的能帶特性。
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