輻合角 的英文怎麼說
中文拼音 [fúgějiǎo]
輻合角
英文
angle of convergence-
Since complicated differential and integral operations were involved in the kernel of the integral equation, we simplified the equation and got the nakano equation. as instances, the planar archimedean spiral antenna, the planar equiangular spiral antenna, the monofilar helical antenna, the conical helical antenna with fixed ascending angle and the conical equiangular - spiral antenna were analyzed through the moment method. all of the results matched fairly well with the references and experiment results
這種方法的積分方程的積分核里含有復雜的微積分運算,為了簡化計算,本文在推廣的海倫積分方程的基礎上,對方程進行了簡化,推導了nakano方程,並以平面阿基米德螺旋天線,平面等角螺旋天線,軸向模圓柱螺旋天線,具有固定升角的圓錐螺旋天線和圓錐等角螺旋天線為例,用矩量法求解了天線上的電流分佈,研究了螺旋天線輻射的寬頻帶特性,所得的結果均與參考文獻吻合很好。To the influence of the plateau terrain, the impact of the elevation and the roughness of terrain to every energy component out and incoming are study, and basing the soil spectrum model proposed above, a new radiative transfer model of terrain area was put forwarded in which the soil water content, lai, terrain roughness and elevation were considered synchronously, and incoming scatter light was integral with the solid angle of semi - globe space defined by the slope of the pixel, so scattering lights of terrain and the sky are properly considered, but the operation is still within the acceptable range
地形與反射率的關系是本文研究的一個重點。本文對崎嶇山地象元的各入射光和反(散)射光分量進行了深入分析,在所提出的濕潤土壤光譜模型和植被冠層模型的基礎之上進一步提出了新的適合青藏高原的山地輻射傳輸模型。該模型同時考慮了土壤含水量、植被覆蓋( lai ) 、地形起伏和海拔高度的影響,並以象元坡面定義的半球空間立體角對環境入射光進行積分,使周圍地形和天空散射光均得到適當考慮,計算量又在可接受范圍內。An analytical mosfet threshold voltage shift model due to radiation in the low - dose range has been developed for circuit simulations. experimental data in the literature shows that the model predictions are in good agreement. it is simple in functional form and hence computationally efficient. it can be used as a basic circuit simulation tool for analysing mosfet exposed to a nuclear environment up to about 1mrad. in accordance with common believe, radiation induced absolute change of threshold voltage was found to be larger in irradiated pmos devices. however, if the radiation sensitivity is defined in the way we did it, the results indicated nmos rather than pmos devices are more sensitive, especially at low doses. this is important from the standpoint of their possible application in dosimetry
該模型物理意義明確,參數提取方便,適合於低輻照總劑量條件下的mos器件與電路的模擬。並進一步討論了mosfet的輻照敏感性。結果表明,盡管pmos較之nmos因輻照引起的閾值電壓漂移的絕對量更大,但從mosfet閾值電壓漂移量的擺幅這一角度來看,在低劑量輻照條件下nmos較之pmos顯得對輻照更為敏感。The thesis deduces the generating functional of proper vertexes and brst transformation of the system of matter field coupling to non - abel gauge field, gives noether conservation charge of brst transformation, shows up the model ' s brst transformation when the gauges are lorentz, coulomb and radiation gauges, respectively, finishes the brst quantization of ghost field in ( 1 + 2 ) dimensions model with non - abel chern - simons term coupling to the scalar field, achieves the lagrange density and hamilton density under brst transformation
導出了物質場與非abel規范場耦合系統的brst變換以及此變換下的ward恆等式和正規頂角的生成泛函,給出了其brst變換下的noether守恆荷。針對lorentz規范、庫倫規范、輻射規范三種情況分別給出了此模型的brst變換,並得到了自洽的結果。完成了( 1 + 2 )維時空中非abelchern - simon項和標量場耦合系統中鬼場的brst量子化,得到了brst變換下的noether荷和其對應的拉氏量和哈密頓量。On 22 january 1999, a number of windshear reports were received table 1 from arriving flights caused by sea breeze convergence
一九九九年一月二十二日,數班飛抵赤角的航機報告遇到因海風輻合而造成的風切變表一。Although the runway anemometers did detect the arrival of sea breezes at chek lap kok, windshear could not be recognized when the convergence zone was to the immediate west of the airport
雖然跑道上的風速表探測到有海風吹過赤角,但當輻合區貼近機場西面時,卻未能探測到風切變。We also experimentally observed the effect of sodium atom - molecular collisions and sodium atom - atom collisions on the line - shape and intensity of fluorescence spectra. in addition, the optically pumped infrared stimulated emission and energy transfer up - conversion process are observed in pr3 + : y2sio5, and with the threshold energy, temperature dependence and divergence angle for the stimulated radiation are measured
此外還研究了摻雜在固體y _ 2sio _ 5中的pr ~ ( 3 + )的光泵紅外受激輻射和能量轉移上轉換,分別測得了紅外受激輻射的閾值能量和發散角,並擬合得出了能量轉移速率。Taking erectophile type continuous vegetation as a example, authors had done many monte carlo simulations, and established empirical analytic expressions of radiances with component temperature, soil emissivity and leaf area index. empirical analytic expressions were used to construct objective function and genetic algorithm was employed to synchronously retrieve 5 parameters, such as component temperature, soil emissivity and lai, from thermal infrared 2 channels and 2 angles data. many experiments of genetic algorithm inversion from simulated data were conducted, results show that it is very robust to retrieve component temperature using genetic algorithm ; genetic algorithm can cope with uncertainty inversion problem pretty well if full advantage of priori knowledge was taken. comparison between inversion results and ground - truth data has been done. this paper offers a new example to retrieve component temperature from multi - channel, multi - angle thermal infrared data based on the model of directionality of thermal radiance
在熱輻射方向性規律的基礎上,以喜直型連續植被為例,進行了大量的monte carlo模擬,建立了輻射亮度和組分溫度植被葉面積指數及土壤比輻射率之間的經驗函數關系。採用遺傳演算法,從熱紅外2個波段2個角度數據中,同時反演混合像元組分溫度土壤比輻射率和葉面積指數等5個參數。通過對模擬的觀測數據進行大量的遺傳演算法反演試驗,結果表明,遺傳演算法反演組分溫度非常穩健,在寬松的先驗知識條件下,遺傳演算法可以解決不確定性反演問題。By using the concept of iterated order, we investigate the argument distribution of the multiple value and the derived functions of integral functions with iterated order
摘要利用整函數的迭代級的概念,研究了迭代級整函數的結合於導數與重值的輻角分佈。On the forth, the formative mechanism and development features of economic development system of urban agglomerations are been elaborated, the author makes a further study on the mechanism of economic integration of great pearl river delta urban agglomerations. and then gives a retail discussion on integration goal and the four models has been brought forward
( 5 )從產業體系的升級和重組、產業空間轉移和集群化發展對城市群經濟整合發展深層作用等多維的視角出發提出大珠江三角洲城市群經濟整合模式,其中包括產業轉移與互補、點軸聯網輻射、職能分工和集群化整合等四種模式。Secondly, proportional arc length method is used to conformal mapping process of asymmetry sections so as to solute the 2d radiation problem with the method of multipole expansion. on the basis of above, 3d hydrodynamic coefficients are given and motions of the container ship flokstra are predicted considering the initial heel
然後,採用比例弧法對全剖面進行保角變換並在此基礎上用多極展開法計算非對稱剖面的輻射流場,進而採用切片理論合成全船的水動力系數並對flokstra集裝箱船進行了考慮橫傾影響的運動響應預報。Thirdly, considering when acoustic wave with a certain frequency or angle is incident upon plates, it will greatly cause the radiation power " translating. this paper details the causes of coincident effect and gets the calculating formula. the conclusion is resulted that thick plate and uniaxial anisotropies can lower critical frequency
針對聲波入射板面時在某一特定頻率或特定入射角度時會使聲輻射能力大大增加並產生聲能的大量透射這一現象,詳細討論了產生吻合效應的條件;並針對工程實際中所應用到的各種尺寸、材質的板分別推導了其吻合頻率和臨界頻率的計算公式,得出了厚板和材料的各向異性均會使結構的臨界頻率下降的結論。On 22 january 1999, a number of windshear reports were received table 1 from arriving flights caused by sea breeze convergence. a moderate to fresh easterly airstream was affecting the south china coastal areas on 22 january 1999
一九九九年一月二十二日,數班飛抵赤?角的航機報告遇到因海風輻合而造成的風切變(表一) 。Numerical results show that if appropriate delay times of sources are exerted on elements of phased array, direction of acoustic beam radiated from the phased array can be steered so that the refracted compressional wave and the refracted shear wave can be excited effectively
結果表明,只要在相控線陣的各陣元之間施加合適延遲時間的激勵信號,就可以調整輻射器的輻射聲束的方向,以有利於激發滑行縱波和滑行橫波;只要採用相對較低的頻率或使用加權相控線陣,就可以增大相控線陣的輻射主瓣角寬,以利於在任意地層有效激勵滑行縱波。Topics covered include : statistical analysis of signal processing systems, including radiometers, spectrometers, interferometers, and digital correlation systems ; matched filters and ambiguity functions ; communications channel performance ; measurement of random electromagnetic fields, angular filtering properties of antennas, interferometers, and aperture synthesis systems ; and radiative transfer and parameter estimation
主題包含了信號處理系統的統計分析;輻射儀、光譜儀、干涉儀及數位關聯系統;匹配濾波器、未定值函數;通信通道的效能;隨機電磁場之量測;天線的角度濾波特性;干涉儀與孔徑合成系統;輻射轉換與參數估計。The paper emphasizly researches response functions of absolute radiometers, and the method of variational angle measure is corrected. the paper analyzes the function of an angle of incidence and the area in which absolute radiometers absorb the solar irradiance under considering the characteristic and principle of absolute radiometers. the function of absolute radiometers temperature raise and time is discussed, and the curve of the function is drawed by computer
在結合絕對輻射計的結構特點和工作原理的基礎上,分析和討論了絕對輻射計接收光輻射的等效面積隨太陽光線入射角變化的函數關系式,在此函數關系式的基礎上,分析和討論了絕對輻射計接收太陽光輻射后,其溫度的升高量隨時間變化的函數關系式,並且用計算機編程畫出了絕對輻射計的溫度升高隨時間變化的曲線關系圖。分享友人