數字大氣模型 的英文怎麼說
中文拼音 [shǔzìdàqìmóxíng]
數字大氣模型
英文
digital atmospheric model- 數 : 數副詞(屢次) frequently; repeatedly
- 字 : Ⅰ名詞1 (文字) character; word 2 (字音) pronunciation 3 (字體) form of a written or printed ...
- 氣 : Ⅰ名詞1 (氣體) gas 2 (空氣) air 3 (氣息) breath 4 (自然界冷熱陰晴等現象) weather 5 (氣味...
- 模 : 模名詞1. (模子) mould; pattern; matrix 2. (姓氏) a surname
- 數字 : 1. (表示數目的文字; 表示數目的符號) figure; digit; numeral; character; numeric character 2. (數量) quantity; amount
- 模型 : 1 (仿製實物) model; pattern 2 (制砂型的工具) mould; pattern3 (模子) model set; mould patter...
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Air is entrained as water jetting into water cushion pool, the gas - liquid two phase flows field are formed. the every phase velocity field are measured by using piv and ptv ( particle tracking velocimetry ) method in the course of jet angle 75and60 in gas - liquid flows of water cushion pool. image house of two phase flows are set up
西安理工大學碩士學位論文使用數字圖像處理技術中的piv和ptv測速技術就射流入水角75度和60度兩種情況分別測量了水墊塘模型水氣兩相流流場的各相速度場,建立了相應的兩相流流態圖像庫。Comparing numerical character of above two models, it shows that the variance of atmosphere motion must be modified so the time step used in numeric simulation has no effect on numerical character of chaff clouds
對數值模擬模型的分析表明必須對大氣的運動方差進行時間離散化補償,進行離散化補償后箔條雲團的數字特徵不受模擬時時間步長的影響。Delay is obvious in large body because of its inertia, moment force, stress and gearing. transfer of electical cell increases the delay. this paper points out that the delay can be compensated by using the smith control algorithm. the result of computer emulation proved that a better quality is gained by using the algorithm on heavy nc machine
大慣量物體,由於其慣性,加之傳動鏈長,所需的扭矩大,引起的應變大,加上電氣轉換元件的滯后,故滯後效應明顯.該文提出用史密斯控制演算法將滯后進行補償.計算機數字模擬結果說明,對大慣量有滯后的重型數控機床,應用該演算法能得到較好的控製品質With reference to calculation methods of solar radiation within domestic and abroad literature and with the help of our country ' s dem ( with its resolution is 1 km x 1 km ), we build a new model for potential solar radiation calculation combining with pci geomatica ' s platform. in the calculation, hypothesis is that insofar one clear day in more than one year as the biggest value of solar radiation of one day in many years is defined as potential value of daily global solar radiation, we also consider the infection of the slope, aspect and its geometry relations affect on solar radiation. we calculate potential solar radiation which maybe useful for research the distribution of solar energy and build large - scale grid database of our country ' s solar radiation
本研究試圖在借鑒國內外已有的太陽輻射計算方法的基礎上,利用全國的1 : 100萬數字高程模型數據( grid大小1km 1km )為數據源,以pcigeomatica為計算平臺,以全國多年的太陽輻射日觀測數據進行模式驗證,在晴天無雲的理想條件下,根據太陽光線與實際地形間的幾何關系,研究坡度、坡向等地形因子對太陽輻射的影響,探討太陽輻射在復雜地表上的分配規律,力求尋找潛在太陽總輻射合理的計算方法,為研究太陽輻射時空分佈特徵和建立全國尺度的太陽輻射柵格氣象數據庫奠定基礎,為大尺度上的生態學過程研究提供基礎信息。分享友人