空化觀測 的英文怎麼說
中文拼音 [kōnghuàguāncè]
空化觀測
英文
cavitation observation- 空 : 空Ⅰ形容詞(不包含什麼; 裏面沒有東西或沒有內容; 不切實際的) empty; hollow; void Ⅱ名詞1 (天空) s...
- 觀 : 觀名詞1. (道教的廟宇) taoist temple2. (姓氏) a surname
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 空化 : cavitation空化機理 cavitation mechanism; 空化噪聲 [聲學] cavitation [aeration] noise; 空化作用 [化學] cavitation
- 觀測 : observe; observation; viewing
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Given the initial conditions including ( 1 ) number density distribution in space which has the similar form to the present day ones, ( 2 ) both the power law and gaussian mass functions for clusters, and ( 3 ) two different velocity distributions which one has a constant dispersion and the other is described by the eddington formula, the dynamical evolution of globular clusters in our milky way galaxy is investigated in detail by means of monte carlo simulations
本文採用與觀測結果具有相同形式的球狀星團空間密度分佈函數,在給定兩種球狀星團系統的初始質量譜(冪律的和對數高斯的)和兩種球狀星團系統的初始速度分佈函數(愛丁頓速度分佈函數和常數的速度彌散度)條件下,我們採用montecarlo的方法對球狀星團系統的動力學演化進行討論。The proportionality constant, h, is known as the hubble constant and quantifies how fast space is stretching ? not just around us but around any observer in the universe
其中的比例常數h ,就是所謂的哈伯常數,它可以把空間向外延伸的快慢予以量化,不只針對我們周遭,也適用於宇宙中所有觀測者的周圍。We can use the mm5 model in definite time, definite area weather forecasting. we conclude that : : the moving route of this necw in its developing progress was direct - south along latitude, the cold air is rough, and just this made the rough vertical velocity ; the necw southern moving and conflicting with the west pacification sub - tropical high makes rough jet steam. the plenty south - west warm and wet air made by the jet stream gave the rainstorm demanded vapor ;. the rough vertical velocity by jet stream is a main reason in this rainstorm ; the mm5 model uses four - direction analysis data as its input, this avoids some errors occurred in observe and transfer, thus made the result more useful
綜合分析認為: ( 1 ) 、這次冷渦在其發生發展過程中,其移動路徑是沿經圈直線南壓,攜帶的冷空氣勢力較強,形成槽后較強的垂直運動; ( 2 ) 、西太平洋副熱帶高壓偏北位置與東北冷渦南壓形成的急流軸,把源源不斷的西南暖濕氣流輸送到遼西地區,也就是急流軸的左前方位置,為這次暴雨的產生提供了充足的水汽來源; ( 3 ) 、低空急流不但為暴雨輸送水汽,其造成的較強的垂直環流也是產生強降水的一個主要原因; ( 4 ) 、 mm5模式以四維同化資料作為初始場,最大限度地避免了觀測誤差可能造成的積分不穩定,提高了模擬結果的參考價值。Meanwhile the results also showed that the main cause of which the game reanalysis data being better than the ncep reanalysis data is the game reanalysis data including the sonde data of the game but not the different assimilation modes of the two reanalysis data
通過對game外場試驗期和非試驗期的game與ncep兩組再分析資料進行對比分析,我們得到, game再分析資料優于ncep再分析資料的主要原因是game的資料同化系統中加入了包括hubex等氣象科學試驗的探空加密觀測資料。In this master dissertation, under the fundamental frame of general relativity, we study the tachyon inflation, d - stars in the spacetime with a nonzero cosmological constant and it ' s observable effects by using some modern mathematical methods such as differential equation and qualitative analysis
本文以廣義相對論作為基本理論框架,使用微分方程及其定性理論,研究了宇宙演化和結構中的兩個問題,其中包括了快子暴漲,非零宇宙常數時空中的d星以及它的種種可觀測效應。Based upon the toms long - time series data products, total ozone amount and its variations with season and yearly differences over china are analyzed. it was found that yearly differences of the total ozone amount are observed in some years, and seasonal changes are clearly observed
本文還利用常規觀測資料和六年的toms臭氧反演產品(月平均產品)資料,分析了我國上空1997 - 2002年間大氣臭氧總量的分佈和季節變化。It was the first trial to employ the newly equipped migration data acquisition and analysis system for the scanning entomological radar and, a twin light - trap developed in china for, systematic long - term observations of migration of the beet armyworm spodoptera exigua, beet webworm loxostege sticticalis and cotton bollworm helicoverpa armigera in northern china the study provided direct evidence for the migration of 5 ". exigua in china, many parameters of migratory behaviour of the three species of insects, a better understanding of the relationship between migratory behaviour and wind or temperature field. the results enriched the theory of migration and provided new scientific knowledge for pest management in china
本研究初步闡明了我國華北地區空中昆蟲群落結構,首次使用我國自行研製的掃描昆蟲雷達的數字化數據採集及分析系統,及價廉、高效的姊妹燈誘蟲法對華北地區甜菜夜蛾spodopteraexigua 、草地螟loxostegesticticalis和棉鈴蟲helicoverpaarmigera的遷飛進行了長期系統地觀測,得到了甜菜夜蛾在我國北方遷飛的直接證據,三種害蟲遷飛行為的若干參數,認識了昆蟲遷飛行為與風溫場的關系,豐富了昆蟲遷飛理論,為我國害蟲的治理提供了科學依據。Based on an analysis of the sources of errors in airborne gravity measurements, an error model is studied to constructed mathematically which can characterize the change of systematic errors, with which the network adjustment is carried out and the model parameters are determined simultaneously. and finally, the compensation of systematic errors is realized
航空重力測量測線網平差就是在分析、總結航空重力測量的主要誤差源基礎上,研究建立反映航空重力觀測系統誤差變化規律的誤差模型,根據交叉點不符值條件,平差求解各測線上重力觀測值系統誤差改正數,然後對各測線上所有重力觀測值進行改正(補償) 。For understanding the dynamic processes of the all scales cloud systems of mei yu, and the relationship between mei yu system and the summer monsoon of eastern asia, the hubex has been carried on by the cooperation of china and japan in summer since 1998. the data observed by hubex, the data observed by other monsoon experiments and the general data ( gts data ) were merged into the assimilation system of game and made into the game reanalysis data, so how the game reanalysis data
為了更好地理解梅雨鋒區多尺度雲系的能量與水分循環過程以及他們與地面水文過程的相互作用,從而搞清梅雨區雲系的多尺度動力學及其與東亞季風的關系, 1998年夏季中日合作開展了淮河流域能量與水分循環試驗( hubex ) ,該試驗和game其他試驗的探空加密觀測資料作為原始資料的一部分經過同化分析,得到了game再分析資料。In this paper, the climatic variation features and spatial and temporal distribution of the flood and drought in zhejiang province were analyzed by using 36 monthly and seasonal station data during 1961 - 1999 observed over zhejiang province, 160 rainfall and temperature data during 1951 - 1999 observed over china, northern hemisphere 500mb height data during ! 961 - 1999, the planting and flood disasters area data in zhejiang province during 1949 - 1998. we used many method : calculated trend coefficient of rainfall and temperature, used eof, reof, ssa ( singular spectrum analysis ) and mem ( maximum entropy spectrum ) method and synoptic method. we first studied the climatic variation features of summer and autumn and characters of the flood and drought in zhejiang
本文用1961 - 1999年浙江省36個氣象觀測站的降水量和氣溫資料、 1951 - 1999年全國160站的降水量和氣溫資料、 1961 - 1999年500hpa月平均高度資料和1949 - 1999年浙江省11個地市的受災面積、成災面積、耕地面積等資料,通過計算趨勢系數、變量場eof分解、旋轉eof分解、奇異譜分析和最大熵譜分析等多種統計學方法和天氣學方法,研究了浙江省氣候變化特點及旱澇災害時空分佈的特徵。To overcome this problem, not only the meteorological observation network has to be equipped with automated, higher precision, and more economical devices and instruments, but also a synthetic mobile observation system is required for filling in the data gaps between the surface and upper air sounding stations
為了克服這一問題,除了研製自動化程度高、測量精度高和性能價格比高的儀器設備來裝備現有的定點大氣觀測網外,還應建設一些流動的大氣監測系統,以獲得常規大氣觀測臺站空檔間(如大洋、山區和荒漠等無人區)的天氣現象和大氣環境變化的信息。The single - observer passive locating method with phase difference rate of change and some key technologies - are studied in this dissertation on the applying background of locating remote slow offing targets with fast plane. this dissertation is outlined as follows
本文面向快速運動的空中觀測平臺對海面慢速運動目標定位的特定應用背景,利用相位差變化率方法進行了單站無源定位體制和關鍵技術的理論研究。The research include : 1 ) measuring co2 concentration in the soil air and vegetation air by using co2 measuring instruments ; 2 ) measuring the releasing rate of co2 coming from soil surface by using alkaline absorbing method ; 3 ) measuring the hydrochemical indexes of soil water. the research results are as follows : ( 1 ) the author has made field observation of depth distribution of soil air co2 in the mt. jinfo karst experiment site. the results show that two concentration gradient, soil to atmosphere and soil to carbonate rock, are form
本次實驗以典型的亞熱帶巖溶分佈區?金佛山自然保護區為例,選擇了巖溶窪地內的高山草甸和靠窪地邊緣地帶的方竹林、裸地以及石林內的喬木林4個樣地,對土壤co _ 2濃度空間分佈規律以及晝夜動態和日動態變化狀況進行了觀測,獲得了如下新的認識: ( 1 )土壤中co _ 2濃度分佈的觀測結果表明,土壤中具有土壤-大氣、土壤-碳酸鹽巖兩個方向的co _ 2濃度梯度。But there are still many things need to do. to improve the situation, under the direction of my teacher, i began to observe the zenith luminance of clear sky and overcast sky. and after analyzing the observed data, i drew the zenith luminance in beijing
雖然如此,通過對北京地區晴天和陰天天頂亮度的觀測,仍可以得到北京地區晴天和陰天天頂亮度隨太陽高度角變化的規律,從而得到天頂亮度值,將其代入cffi標準晴天和陰天天空亮度公式后得到北京地區的晴天和陰天天空亮度絕對值。After comparing the initial wind, geopential height, relative humidity and the sounding profiles of temperature and humidity at several sounding stations between the original mm5 assimilation scheme and the 3dvar assimilation system, some conclusions are drawn : the relationship among model variables becomes more harmony and more close to observations
分析比較初始風場、初始位勢高度場、初始相對濕度場和臺風周圍分佈的探空站的探空曲線后的結果表明:在三維變分同化后各模式物理量之間更加協調,更加符合實際觀測。The study on the numerical simulation experiments to typhoon processes using 3dvar assimilation system also carries out. the conclusions are drawn after comparing the wind field, geopential height, relative humidity and several sounding profiles at sounding stations between control experiment and 3dvar data assimilation experiments. the results show that the model variables are more harmony in dynamic and physics to the experiments of 3dvar assimilation
在對三維變分實驗與對應控制實驗的風場、位勢高度場、相對濕度場和幾個探空站探空曲線的模擬結果,及對所模擬的臺風路徑和路徑的偏差比較分析研究的基礎上,得到如下結果:各模式物理量之間在三維變分數據同化后的分佈,在動力上和物理上都更加協調和合理,更加符合實際觀測。The results are as follows : ( 1 ) based on soil temperature data measured at different time in the field, soil temperature characteristics under plastic mulch were analyzed at four locations : the middle, the edge, in - between the plastic film and uncovered spot ; the characteristics of soil temperature profile from 0 to 25cm depth and the correlation of soil temperatures in different soil layers were studied at different time with and without plastic mulch ; on the basis of analyzing temporal and spatial variations of soil temperature in a corn field, the relations between soil temperature and air temperature were established, and a new method that only uses air temperature to predict soil temperature profile at different time is proposed. the predicted results showed good accuracy
成果如下: ( 1 )根據大田實測地溫資料,分析了覆膜條件下膜中、膜邊、膜間和揭膜四種處理在早、中、晚三個不同時刻的地溫特徵;分析研究了各觀測時刻覆膜與不覆膜條件下0 25cm剖面地溫的特點及各層地溫間的相關關系;在重點對玉米田地溫時空變化特徵分析的基礎上,首次將覆膜與不覆膜不同時刻觀測的剖面地溫與氣溫建立了聯系,提出了僅根據氣溫資料來預測一日內不同時刻剖面地溫的新方法,預測結果表明其精度較高。Basically, the predicted cavitation phenomena coincides with those observed in the experiment for a corresponding model turbine, it indicates that the simulation can provide reference for the cavitation performance prediction of other turbines
數值預測的空化流動現象與模型水輪機空化試驗中所觀察到的現象基本一致,說明數值模擬結果可為水輪機的空化性能預測提供參考。In this paper a system has been developed for studying characteristics of " clouds and sky " on the images taken by a whole - sky camera at three different wave bands ( the visible, the infrared, long wave infrared ), then assessing the presence, distribution, shape, and radiance of clouds over the entire sky using automated cloud decision algorithms and related processing
根據發展自動化雲觀測的目標,利用雲和晴空大氣在可見光近紅外、熱紅外多波段散射輻射和熱輻射的不同特徵,我們嘗試建立一個多波段(可見近、熱紅外)全天空成像輻射觀測系統,進行全天空分波段成像輻射的獲取,定量分析和特徵識別,獲得雲量、雲型、雲底高信息,實現對雲參數化信息的自動獲取。Of course, the next big step for chinese space astronomy would be to deploy a satellite dedicated only for astronomical research. there are currently a few projects in the planning stage, including a hard x - ray all - sky survey satellite the hard x - ray modulation telescope mission, and a " microsatellite " weight less than 100 kg mission to study long - term variability of stars and galaxies space - based multi - band variable objects monitor
當然,下一步首先應是發射專門用作天文研究的衛星,目前有幾個計劃正處于策劃階段,包括建造一枚作硬x射線巡天觀測的衛星硬x射線調制望遠鏡, hxmt和一枚微型衛星重量不逾100公斤,來研究恆星和星系的長期變化空間變源監視器, svom 。分享友人