指數密度梯度 的英文怎麼說
中文拼音 [zhǐshǔmìdùtīdù]
指數密度梯度
英文
exponential density gradient- 指 : 指構詞成分。
- 數 : 數副詞(屢次) frequently; repeatedly
- 密 : Ⅰ名詞1 (秘密) secret 2 [紡織] (密度) density 3 (姓氏) a surname Ⅱ形容詞1 (距離近; 空隙小)...
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 梯 : Ⅰ名詞1 (梯子; 樓梯) ladder; stairs; steps; staircase 2 (姓氏) a surname Ⅱ形容詞(形狀像樓梯的...
- 指數 : 1. [經] (比數) index number; index 2. [數學] exponent
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By means of the results obtained, such as the quantificational relationships between the rock ultrasonic wave parameters and the important formation conditions like pressures, and the half - quantificational relationships between the rock ultrasonic wave parameters and porosity and density of those rocks, and the relationships between rock ultrasonic wave parameters and the composition of rocks, we established the corresponding relationships between the ultrasonic wave parameters and depth under the main formation conditions ( indicating temperature and pressure gradient ) in tertiary of zhujiangkou basin, which should be very useful for the geophysical exploration
獲得了巖石聲學參數與壓力等重要地層條件之間的定量關系,巖石聲學參數與孔隙度和密度之間、以及與巖石組成之間的半定量關系,並建立了在珠江口盆地東部第三系主要地層條件下(指溫度梯度和壓力梯度)不同巖石類型的主要聲學參數與深度之間的對應關系,該關系可為地球物理正演模型的建立提供基本參數、並為地震反演提供新的約束機制。Several influence factors to result plasma drift in hainan were analyzed. in this paper the characteristics of ionospheric parameters variation were analyzed systematically and some new results in storm - time such as seasonal behaviors were obtained ; it is the first time to investigate the ionospheric drift behavior in hainan and some new results was obtained, the relationships between each two plasma drift velocity components in storm time in hainan were found and the electric filed variation in hainan ionosphere also was obtained ; the results also show that there are big differences of the ionosphere parameters bo and bl obtained from the data with that obtained from the iri - 2001 applied for hainan ; a new phenomena was found during a strong magnetic storm, that a layer with very strong electron density and density grad was found during the recovery phase of the storm, its horizontal scale is beyond 100km and temporal scale is about 2 hours, this phenomena repeated 3 times continuously. a type of negative disturbance in high and low latitude but positive disturbance in east - asia also has been found
本文較為系統地給出了海南地區電離層的參數變化特徵,特別是得到了一些暴時與以往不同的季節特性;第一次給出了海南地區的電離層等離子體漂移特徵,發現等離子體漂移暴時擾動在三個方向上有內在的聯系,得到了電場變化曲線;研究結果還表明海南電離層的半厚指數和形狀參數等與國際參考電離層iri - 2001存在很大差別;通過對強磁擾動事件期間的參數變化特性分析發現,在磁暴恢復相期間海南地區電離層底部存在一個電子密度非常大的高密度區,高密度區底部電子密度梯度隨高度急劇增加,該區域的水平尺度可達100公里以上時間尺度約為2小時,連續出現過三次,這是一個在海南從來未發現的新現象;研究還發現了暴時東亞地區電離層擾動會出現高低緯負相而中緯正相的現象。The result showed that landscape diversity index and evenness index increase along the gradient, whilst dominant index decrease along the gradient zones. in general, landscape elements present concentrative d istributing patterns for great size, with landscape patch density and edged density smaller and landscape heterogeneity lower than others within closing to gradient of the city
優勢度指數呈相反的變化趨勢。在接近城市的梯度區內一般是景觀要素以大面積相對集中的分佈格局,景觀斑塊密度與邊緣密度較小,景觀異質性較低。越接近天然次生林區,景觀異質程度越大。To capture some of the synoptic features of the landscape, several landscape pattern metrics ( i. e. landscape diversity index, landscape density index, and congregation index et al ) was calculated using the raster version of fragstats
選用景觀多樣性、景觀密度、聚集度等6個景觀參數,用fragstats景觀指數計算軟體進行計算分析,結果表明:景觀多樣性指數和均勻度指數都是沿梯度區呈增大的趨勢。分享友人