觀測光線 的英文怎麼說
中文拼音 [guāncèguāngxiàn]
觀測光線
英文
viewing ray-
And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed
研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。X - ray flashes had previously been detected from some neutron stars, but they never exceeded the eddington limit by very much
以往天文學家就曾觀測到過從中子星發出來的x射線閃光，但其亮度從來不會超過艾丁頓上限太多。( 2 ) the emission spectra of laser ablation metal copper plasma were measured. the detailed mechanism of plume emission of cu plasma was qualitatively explained using a simple model based on excitation of atom and ion in plume arising from inelastic collision between the elemental species and electron with high kinetic energy. under the local thermal equilibrium model, the electronic temperature of copper plasma was deduced to be in the 104 scale by its emission lines
（ 2 ） cu等離子體光譜：在420 570nm波長范圍內觀測了激光燒蝕cu等離子體的光譜和各發射譜線在等離子體中的空間分佈；比較了激光能量對cu等離子體發射光譜、電子溫度的影響；用局部熱力學平衡（ lte ）近似，測得cu等離子體的電子溫度為104k數量級；在不同背景氣壓下，觀測了激光燒蝕cu等離子體光譜的空間分佈。During its lifetime, the xd recorded a total of 664 triggers. the research team identified and recorded lightcurves of near one hundred solar flare events data taken during half of the orbit when the shenzhou - ii orbiter faces the sun and 30 candidates of gamma ray bursts. many of these observations were verified by similar results taken by other orbiting satellites
探測器在運作期間，共錄得664次撞擊，研究小組由此識別並記錄了近百次太陽耀斑的變光曲線當神舟二號在軌道上面向太陽時和約30次伽瑪射線爆發，大部分觀測結果跟其他人造衛星所測得的類似。The recent researches on observations of h line profile asymmetry in chromospheric flare are reviewed. spectral properties, the corresponding mechanisms of asymmetry, and reproduction of observational spectrum by using semi - empirical atmosphere model are dicussed in detail. at last, the main problems to be solved and further researches are put forward
綜述了近年來太陽色球耀斑爆發時h譜線不對稱性的研究進展，著重討論了光譜特徵和與其對應的不對稱性產生機制，以及利用大氣半經驗模型再生觀測譜線輪廓不對稱性等方面，並提出尚待解決的主要問題和進一步的研究方向。Film illuminators for medical x - ray films
醫用x光射線膠片照明觀測器Relativity says that light always moves in a straight line through empty space, and always at the same speed in a vacuum, no matter what your observation point
它指出光在真空中走直線，且在真空中光速恆定，不論你的觀測點如何。During the total solar eclipse in 1919, scientists verified that light from remote stars could be bent by the gravity of the sun - just as einstein predicted. einstein became world famous overnight
1919年，當日食觀測隊藉日全食時證實來自遙遠恆星的光線被太陽的重力所偏折恰如愛因斯坦的預測一樣，一夜之間，愛因斯坦成為全世界的知名人物。If the focal point of the len shifts around the surface of the sample, the mass ablation, the temperature of the plasma and the spectral intensity appear asymmetric and their maximum occur at the location which is about 0. 4mm under the surface of the sample. ( 2 ) to the plasma of the aluminum alloy sample, when the operating voltage is 1600v, the height from the observed location of the plasma to the surface of the sample is 2mm and the argon pressure is 660 torr, the spectral intensity have the maximum values
（ 2 ）對于標準鋁樣品，在激光器工作電壓為1600v 、等離子體觀測高度為2mm 、氬氣壓力為660乇時，其譜線強度最強；以al 308 . 22nm 、 al 309 . 27nm兩條譜線為分析線，發現隨著環境氣壓的增大，譜線自吸效應明顯增強，當環境氣壓達到600 - 700乇時，譜線幾乎產生自蝕。In this experiment, a neodymium glass laser is used to study the effects of the operating voltage, power density, the height from the observed location of the plasma to the surface of the sample, the location of the sample, the gas composition and the pressure on the intensity and quality of the spectrum
本文採用高能量釹玻璃激光器，研究了激光器工作電壓、功率密度、等離子體的觀測高度、樣品位置、環境氣體及氣壓對等離子體的譜線強度及譜線質量的影響，獲得了最佳的實驗條件，並測量了金屬分析樣品中某些元素的含量。Thereafter, it is found that the binary exhibits cyclic behavior on thermal timescale. the model agree with the observed light curve in most parts of the cycle
而雙星的循環演化不是在整個循環內都與wuma型相接雙星的觀測光曲線的要求。A pass of a satellite occurs whenever it rises above the observer ' s horizon ; a " visible pass " occurs when all three of the above conditions are satisfied, so the sunlit satellite is seen against a dark sky - this will generally occur either shortly after sunset, or shortly before sunrise
不論衛星何時從觀測者地平線之上穿過，都會形成衛星路徑；但是衛星經過的「可見路徑」只有在滿足上面所有三個條件的時候才可以形成，有此看來，只有被日光照射的人造衛星必須與暗背景對比才能被觀測到-這經常要在太陽剛剛落山或者太陽將要升起之前。Solid part of orbit shows where the satellite is sunlit, and the dashed part where it is in the earth ' s shadow and invisible
軌道的實線部分顯示衛星處于太陽光照之中，而虛線部分則表示衛星處在地球的陰影里，所以可以觀測到。The simulation program has been implemented to simulate the procedure of hxmt detecting x - ray source. the simulation result has been used to analyze the overlay region in celestial sphere, the variation of photon current intensity and the variation of the angle between sun and orbit, which demonstrate the reason why to select a 550 km height and 43o inclination low earth orbit as hxmt ' s orbit
利用模擬程序，實現了模擬一個正在預研的天文衛星? ?硬x射線調制望遠鏡hxmt觀測x射線源的過程，分析了天球覆蓋、 hxmt接收的光子流強度的變化和太陽軌道面夾角的變化，說明了選取高度為550km ，傾角43o的近地圓軌道作為hxmt的運行軌道是合理的選擇。We have collected some observational data of some w uma type systems, and studied the period and the light curve changes
我們收集了一些wuma型相接雙星的觀測資料。研究了它們的軌道周期和光曲線的變化。The substrates were biased by dc voltage negatively with respect to ground. the films were characterized by infrared spectra and x - ray photoelectron spectroscopy ( xps )
薄膜成分以紅外吸收譜和x射線光電子能譜標識，薄膜形貌以原子力顯微鏡觀測。The observable universe grows by a light - year every year as light from farther away has time to reach us
可觀測宇宙的范圍，會因來自更遠處的光線到達我們這里而每年向外長大一光年。In the presence of light coming from fluorescent lamps operating from 50 hz supplies the stroboscopic effects cause a wrong perception of the movement
由於來自於工作在50赫茲供電下的熒光燈的光線的存在，頻閃觀測效應導致對運動的錯誤觀測。The paper analyzed the typical method of positioning of optical fiber in astronomic observation. according to the structure ' s characteristics and the working demands of lamost, bring forward the new plan on positioning of optical fiber that the focal plane is divided up many unit zones
通過對天文觀測中光纖定位典型方法的分析，結合工程的特點和工作要求，提出了在焦面上進行分區，並且在單元區域內做直線運動和旋轉運動的雙電機單元光纖定位機構的方法。( 4 ) before the presentation of results of our observations and analysis, the corrections for the ccd images and the methods to analyze the observational data were introduced. ( 5 ) in order to analyze the lightcurves of ( 469 ) with multi - periods, the theories about the precession of the asteroids and the eclipse of the binary asteroids were involved
因此，在第五章中，針對2002年所觀測的一顆非單一周期光變的小行星（ 469 ）的情況，嘗試利用小行星受迫進動或雙小行星運動理論，對（ 469 ）的光變曲線進行了解釋。分享友人