結構常數 的英文怎麼說
中文拼音 [jiēgòuchángshǔ]
結構常數
英文
structural constant-
For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。There are many adaptive changes in the two research subjects ( artemisia. songarica schrenk. and seriphidium. santolinum ( schrenk ) polijak. ) in morphology and anatomy, such as with the increase of the daily age, the root - shoots ratio increased ; the root became stronger ; the ratio of leaf volume and leaf area increased ; the volume of epidermic cell decreased ; the cut - icle and phellem layer on the surface of root thickened. stoma caved in leaf ; epidermal hair of leaf and stem well - developed, palisde tissue developed well, the cell gap decreased ; the spongy tissue disappeared ; leaf is kinds of isolateralthat is the typical xeromorphic structure ; crystal cell and fibric cell increased ; conducting tissue and mechanical tissue developed well ; bundle sheath appeared
實驗研究的兩種菊科（ compositae ）植物（準噶爾沙蒿（ artemisiasongaricaschrenk ）和沙漠絹蒿（ seriphidiumsantolinum （ schrenk ） poljak . ） ） ，形態解剖方面的變化表現為：隨日齡增加，根長/株高比值日益增大；根系逐漸發達；體積與葉面積比逐漸增大；表皮細胞體積變小；角質層增厚；根外部出現加厚的木栓層；氣孔下陷；葉、莖部的表皮毛密布，柵欄組織日益發達；而細胞間隙日漸變小；海綿組織逐漸消失；葉面結構常為典型旱生結構? ?等葉面；晶細胞及纖維細胞數目增多；輸導組織、機械組織日漸發達；具有維管束鞘等等。Study of stereometric parameters of optic nerve head of normal eyes using heidelberg retina tomography
視網膜斷層掃描儀對正常人群視乳頭形態結構參數的測定But, generally, the number of the coalition structure is too large to realize the searching of all the coalition structures
但通常情況下可能的聯盟結構的數目太大，以致不允許進行窮盡搜索而找出最優解。The result of orthogonal experiment and secondary regression experiment on the bionic disk plows indicates that the bionic non - smooth partial sphere structure cell can decrease resistance by almost 30 % than common plow in the condition that the structure and distribution combine rationally. therefore, the bionic design and experiment research on disk plows is very significant
仿生圓盤犁刀的正交試驗和二次回歸試驗結果分析表明，如果圓盤犁刀的仿生非光滑球冠結構單元的結構參數和分佈組合搭配合理，仿生圓盤犁比普通圓盤犁可減少阻力約30 ，因而本文對圓盤犁刀進行仿生設計與試驗研究是非常有意義的。The numerical and experimental results of this y - branch structure indicate that the proposed y - branch structure, without extra fabrication technologies, has a lower excess loss as compared with the conventional ones. optimal designs of the structural parameters for the multimode interference coupler are carried out. low loss and high uniformity of the multimode interference couplers are achieved when the waveguide is weakly guiding
研究了y分支耦合器中分支頂端間距（為工藝製作方便）帶來的附加損耗，提出了低損耗新型y分支耦合器結構，並給出了相關結構參數的優化設計方法，我們的理論計算和實驗測試結果均表明，該新型結構可以在常規光波導製作工藝下提高器件的指標。The coupling from the pulse jet in the nozzle to the unsteady flow in the tube was discussed. and the relations between the parameters of gas charge and discharge, structure, working, flowing in tube and ideal cooling efficiency were established. the theory foundation of the influence of pulse jet on the flowing in the tube and characteristic would be built
探討了脈動射流與管內非定常流動的耦合問題，建立了脈動射流有關參數如進、排氣參數、結構參數、運行參數等和振蕩管內流動參數及理想製冷效率之間的普遍聯系，為研究脈動射流參數對振蕩管內流動及其性能的影響打下了理論基礎。The fine - structure constant is an important zero dimension constant in the atomic physics. this article introduces the origin of fine - structure constant, and discusses its physical significance, and theoretical calculation
摘要本文介紹原子物理學中重要的無量綱常數之一的精細結構常數的由來，討論它的物理意義和理論計算。In the paper, the computing method based on the non - steady wind pressure in frequency domain is applied to the calculation of roof structure of shanghai south railway station
摘要為了研究結構參數對復雜大跨空間結構風致振動的影響，以上海南站工程屋蓋結構為例，利用基於非定常風荷載的風致動力響應頻域分析方法，對結構的抖振響應進行參數分析。Under our task experimental condition, we calculated the sensitivity of our planning to develop dial system with direct detection, besides, we studied the relationship between the sensitivity of measurement and atmospheric refractive - index structure constant and applied matlab program simulated the system parameters such as beam diameter, laser divergence angle, detection distance and gained relevant relationship curves
在課題實驗條件下，模擬計算了直接檢測dial系統的測量靈敏度。在考慮大氣折射率結構常數對系統測量靈敏度影響的基礎上，並對各種系統參數如光束半徑、束散角和探測距離對測量靈敏度的影響運用matlab程序做了模擬計算，為合理選擇系統設計參數提供了依據。We have the following results through simulation and experiments : i ) turbulent structure constant of atmosphere decreases with altitude ; ii ) turbulence induced power scintillation decreases with the optical wavelength ; iii ) scintillation of space - to - ground optical propagation is smaller than that of horizontal optical propagation ; iv ) power scintillation of space - to - ground optical propagation increases with wavelength ; results above are accord with existent theory. what ' s more, the last result discovers a new rule
通過對數學模型和模擬結果的分析，得到以下結論： a ）大氣湍流結構常數隨海拔高度的增加而迅速減小； b ）由湍流引起的光功率閃爍與波長呈反比； c ）空-地激光通信的光功率閃爍小於地面水平傳輸的閃爍； d ）空-地激光通信的光功率閃爍與波長呈正比；上述結果與理論保持一致。And we also make the simulation of space - to - ground optical propagation by using the software of matlab, including scintillation, turbulent structure constant of atmosphere and spot of horizontal optical propagation
並用matlab語言實現了對空-地激光傳輸的光功率閃爍、大氣結構常數以及湍流大氣中的水平激光傳輸遠場光斑的計算機模擬模擬。According to the theory of optical wave propagation in the slant path and the itu - r turbulence structure constant model, which is altitude dependent and proposed in 2001, the modified rytov method is extended to be applied to study on the problems, which waves propagate in the slant path. the scintillation index as a function of the rytov variance is obtained from weak to strong fluctuation regions with plane wave and sphere wave incidence, respectively
根據斜程傳輸理論和2001年提出的itu - r湍流大氣結構常數模型，將修正pytov方法推廣應用於斜程傳輸問題研究，得到了平面波和球面波斜程傳輸時的閃爍指數，分析了湍流內尺度、近地面風速等參量對閃爍指數的影響。These energy levels are determined by how tightly the atomic nucleus holds the electrons, which depends on the strength of the electromagnetic force between them ? and therefore on the fine - structure constant
能階是由原子核拉住電子的松緊程度所決定，而這又取決于能階之間的電磁力強度，因此便和精細結構常數關系密切。Structural constants of finite dimension algebra and coalgebra
有限維代數及余代數的結構常數Since the effects of turbulent atmosphere is prominent, this thesis concentrates on the effects of the turbulent atmosphere on the laser beam propagation in the atmosphere. the atmosphere refractive index model, especially refractive index fluctuation, power spectrum, phase spatial structure constant are introduced in the following and the specific structure function is achieved
根據大氣折射率模型，以及折射率起伏功率譜密度和相位空間結構常數，得到具體的結構函數；通過長程情況下的馬爾科夫近似，得到了互相關函數，對數振幅和相位協方差函數。These findings complement recent contentious observations that the fine - structure constant, which describes the overall strength of the electromagnetic force, has increased slightly
這項發現為近來一項引人爭議的觀察做了補充：用來描述電磁力總體強度的精細結構常數，已經些微增加了。詳情請見4月21日的《物理評論通訊》 。Numerical model of atmospheric optical refractive index structure parameter
一維大氣邊界層光學折射率結構常數的數值模式An atmosphere structure constant cn2 model, which varies with height, is presented based on itu - r amplitude scintillation model, existing itu - r optical cn2 model and meteorologic measurement relative humidity and temperature profile data, at 10 ~ 30ghz. the log - amplitude scintillation deviation calculated in terms of the cn2 model based on humidity and temperature vertical profile compare with values predicted by means of itu - r and ortgies model. it is emerged that the calculation results based on the cn2 model agree almost with prediction results by itu - r and ortgies model at 10 ~ 30ghz and there is an advantage that relative humidity and temperature varied with height has be considered in the cn2 model
根據光波段的itu - rc _ n ~ 2模型， itu - r幅度閃爍標準偏差模型，和溫度和相對濕度隨高度變化的氣象數據，在10 30ghz ，分析得到了大氣結構常數c _ n ~ 2隨高度變化的模型；並根據溫度和濕度垂直分佈數據計算了對數幅度閃爍_ x ，還與itu - r和ortgies模型的預測結果進行了比較，結果表明，在10 30ghz ，用該c _ n ~ 2模型計算的結果和用itu - r及ortgies模型預測的值符合較好，且在用c _ n ~ 2模型計算時考慮了溫度和相對濕度隨高度變化關系。Parameter, you can specify only one of the architecture constants of
的結構常數的一個。分享友人