structure constant 中文意思是什麼
structure constant
解釋
構造常數-
However, it is not easy to incorporate large n concentration in gap due to the large differences in lattice structure ( gan belongs to wurtzite structure while gap zinc blende structure ) and in lattice constant ( ~ 20 % ) between gan and gap, which will lead to an extremely large miscibility gap
然而要在gap中實現高濃度的摻氮並不容易。這主要是由於gap和gan之間較大的物理特性的差異，特別是晶格結構和晶格常數的差異，使得gap和gan存在較大的可混溶性間隙，從而難以生長高質量的高摻氮的gap材料。 -
Our company is specialiaed in producing varous styles of outdoor products and the series of the leisure chairs, such as camping chair arm chair, folding chair made of good quality fabric and alum or iron tube, camping bed, etc. our products, novel in design, reasonable in structure, beautiful in shape and easy to handel, have been exported to many countties such as europe, america and oceania, gaining favourable comments from the clients with strict management, high quality and excellent service. " quality first, customer supreme " is the constant pursuit of our company and our pronise is that " guarantee quality, prompt delivery, competitive price " we sincerely hope to cooperate with you
沙灘椅，折疊椅產品有休閑椅沙灘椅折疊桌椅搖椅釣魚凳行軍床蹦床花架等質量居國內同我公司是專業生產戶外休閑用品的外貿型企業，公司設備先進技術力量雄厚，主要行業前茅。目前產品已遠銷歐亞美等十幾個國家和地區，深受海內外客商好評。 -
Considering the special structure of multi - ribbed slab, founding diphase body mechanical model of compound material, strengthening rib beam and rib pillar by equivalent volume ratio of concrete and slice brick, the paper drew elastic compution constant and shear constant. based on the things, the paper simplified isotropy compution model to wall, gave practical design formula of elastic mold and shear mold, provided necessary parameter for practical design formula of elastic rigidity. finally the calculating results agree well with the text results
結合密肋復合墻板的特殊構造，建立墻板的復合材料二相體力學模型，按照混凝土與砌塊體積比不變原則對肋梁肋柱同時加強，得出墻板的彈性計算常數及剪切常數，在此基礎上，進一步將墻板簡化為各向同性的計算模型，給出墻板彈性模量及剪切模量實用計算公式，為密肋復合墻板的實用彈性剛度計算公式提供必要的參數。 -
Phenomenal analysis of fine structure constant
發生改變的唯象分析 -
In adding - acid system : the resistivities of different lithotypes " cp tend towards being constant and equal when weight percentage of aniline exceeds 50 % ; because of the structure difference of different lithotypes, the polymerizing places and processes are different ; the resistivities of vituain / pan and fusain / pan reach the lowest point respectively when ( ntloisiog / an is 0. 6, 1. 0 ; the resistivities of cp decline fast and tend towards being constant along with the reduction of diameter of coal. in not adding - acid system : the resistivities of different lithotypes ' cp decline evenly ; it is found on the crossed experiment of cp, that ( nflsaog / an mole proportion is the most important factor to influence output ratio of cp and the weight percentage of aniline is the most important factor to influence resistivities of cp. according to the result of the crossed experiment of cp
在有外加酸體系中：苯胺百分含量大於50時，不同煤巖組分的電阻率趨于恆定和一致；由於不同煤巖組分結構上的差異，導致苯胺聚合場所和聚合過程的不同；當過硫酸銨/苯胺摩爾比為0 . 6 ， 1 . 0時，鏡煤-聚苯胺導電材料電阻率和絲炭-聚苯胺導電材料的電阻率分別達到最低值；在無外加酸體系中：不同煤巖組分/聚苯胺導電材料的電阻率隨著聚合時間的增加而均勻下降，並在8小時左右達到恆定；在對絲炭-聚苯胺導電材料進行的正交試驗中發現：過硫酸銨/苯胺摩爾比對產率的影響最大，苯胺重量百分比對產率影響最小，而對產物電阻率影響最大的是苯胺重量百分比。 -
Abstract : introduced in the following are the main structure and the main specifications of the hi - speed slot lathing machine for pins. suggestions are put forth for the feed - in parameters, constant speed lathing, and the lathing parameter for the hard alloyed blade, for the machine ' s main and assistant operation. promotion is made to quality of product and process of chinese lathing machine for knitting pins
文摘:介紹了國內研製的織針高速銑槽機的主要結構特點、技術參數，並通過生產使用提出對該機主輔加工進給參數、勻速切削，以及硬質合金刀片切削參數的改進意見，將為國產織針銑槽工藝水平和織針質量的提高產生積極的推動作用。 -
So it can be used as both sensor component and driving component. pzt have better electromechanical coupling coefficient, piezoelectric constant, mechanical quality factor, curie temperature and stability, etc. so, pzt can be used widely in smart materials and structure
與其它壓電陶瓷相比，鋯鈦酸壓電陶瓷（ pzt ）有較好的機電耦合系數、壓電常數、機械品質因數、居里溫度和穩定性等，因此， pzt能廣泛應用於智能材料結構中。 -
The main product of our company includes : polyurethane constant slot screen panel with high hole - rate tied to mining vibrating screen, stainless steel screen panel, centrifuge basket, high strength milling - resistance pipe, milling - resistance valve of all kinds and steel structure
簡介：本公司提供：與礦用振動篩配套的高開孔率聚氨脂連續篩縫篩板；不銹鋼篩板；離心脫水機篩藍；高強度超耐磨管；各種耐磨閥門及鋼結構。 -
Based on the research to the stability variable cross - section beam, the bending defection differential equation of the variable cross - section beam in critical state of bucking is established. according to the edge condition of the structure, the differential equation is solved and bucking equation of variable cross - section beam is created. we can get the algorithm which can be used to calculate the equivalent inertia moment of the variable cross - section lattice structure when it is regarded as constant cross - section of solid web beam
對變截面格構式構件的穩定性計算進行了初步的研究，通過建立變截面構件臨界狀態下彎曲變形的微分方程，根據變形邊界條件，得到了兩端鉸支的變截面梁失穩特徵方程，提出了幾種特殊形式的變截面格構式構件等效為等截面實腹式構件時等效慣性矩的計算方法。 -
At last, we discuss the structure of d - stars in the spacetime with a nonzero cosmological constant. the metric and effective mass formula of d - stars have been educed
本文的第三部分，主要討論了帶有非零宇宙常數時空中d星的結構，導出了它的度規和有效質量公式。 -
When reacting with acid splitting products neutracid develops always a new active surface, that means constant efficiency. besides neutracid stops through its granulated structure uncontrolled boiling problems
和酸性物質反應后，除酸劑又會生成一種新的表面活性，意味著長期有效。另外， neutracid的分散體結構可阻止產生共沸現象。 -
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。 -
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。 -
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》 。 -
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。
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