structural density 中文意思是什麼

structural density 解釋
結構比重
  • structural : adj. 構造上的，結構上的，組織上的。adv. -ly
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  1. Several analysis methods such as casting slice, scanning electron microscope, porosity and permeability data, mercury injection data and density of fissures are used to study the reservoir properties of volcanic rocks in huang - yu - re area, the east sag of liaohe basin. volcanic rocks in this area are mainly composed of basalt, diabase, tuff and trachyte. the dominating type of volcanic reservoir space includes secondary solution pores and structural fissures

    通過火山巖的常規物性分析壓汞分析和裂縫密度分析，結合鑄體薄片和掃描電鏡，研究了遼河油田黃于熱地區的火山巖儲層物性特徵，認為該區火山巖儲層巖石類型主要有玄武巖輝綠巖凝灰巖和粗面巖，主要儲集空間類型為次生的構造裂縫和溶蝕孔縫。
  2. Oxygen diffusion transport and electrochemical reaction in the oxygen cathode of direct methanol fuel cell ( dmfc ) have been expressed with the tffa model. model calculation has been carried out to investigate the effects of structural parameters of the dmfc cathode on the electrode performance, which is respectively represented by the curve of cathode overpotential versus current density. much attention has been paid to parameters including the porosity of the reaction layer, the thickness of the thin - film on the flooded - agglomerate, the radius of the flooded - agglomerate, the volume fraction of the flooded - agglomerates in the reaction layer

    本文首先運用tffa模型描述直接甲醇燃料電池（ dmfc ）陰極氧氣的傳遞和電化學反應過程，研究了過電位-電流密度曲線受陰極結構參數變化的影響程度，其中著重考慮了以下幾個參數：催化層的孔隙率，浸漬聚集體薄膜的厚度，浸漬聚集體的半徑，浸漬聚集體在催化層中的體積分數。
  3. The entropy or number of states of system or subsystem are closely related to interaction of particles and energy level distribution, therefore, to study the temperature dependence of the specific heat may supply some important and useful microscopic information which may play an important role in understanding electronic structure, density of state, phonon spectrum etc. the specific heat measurements at low temperatures also play important roles in the finding of the third law of thermodynamics, the quantum theory of solid and bcs theory for superconducting etc. moreover, specific heat measurements help us to understand the different kinds of phase transitions ( such as : structural phase transition, magnetic phase transition, superconducting phase transition etc. ) and the scaling behavior near the critical point

    系統、子系統的熵或微觀狀態數與微觀粒子間的相互作用及能級分佈密切相關，因此研究比熱與溫度的依賴關系能夠提供被測量系統許多極其有用的微觀信息，對理解固體的電子結構、電子態密度、聲子譜等起著十分重要的作用。低溫比熱的測量和研究對熱力學第三定律、固體量子理論和超導bcs等理論的建立起到了積極的推動作用。比熱研究還有助於認識各類相變如結構相變，磁性相變，超導相變等及臨界點附近的標度規律。
  4. Tial - matrix intermetallic compounds have become one of the hottest high - temperature structural materials recently, due to its excellent high - temperature properties and lower density

    Tial基金屬間化合物因具有優良的高溫性能和較低的密度，從而成為目前世界上研究最為熱門的高溫結構材料之一。
  5. Anthropogenic activities ( e. g. development, over - grazing, timber harvest ) can disrupt the structural integrity of oasis - desert landscapes and is expected to impede diversity communities across the landscape and make it fragmented. with human dimension and activities enhancing, the patchiness grain, edge density and landscape contrast become large, landscape diversity and patch fractal dimension decreased

    隨著人類活動的增強，斑塊粒度、邊緣密度、分散度、對比度變大，而景觀多樣性下降，斑塊分維數變小，人類生產經營活動導致了綠洲-荒漠景觀破碎化，綠洲和荒漠生態系統界面上的突變性、對比度和異質性增強。
  6. With high strength, low density, good castability and machineability, al - si series cast alloy has become one of the most important structural materials in manufacturing industry, and zl101a is the most widely used

    鑄造鋁硅合金具有容重小、比強度高、鑄造成形性和加工性能好等優點，已成為製造行業中最受重視的結構材料之一，該類合金中的zl101a應用最為廣泛。
  7. Relying on the yearly scientific research item of the guangdong province department, the dissertation firstly analyses the mechanical and structural characteristics of sma mixture, moreover, gives an elaborate discourse on some issues in prevalent design method of sma and relevant tests such as the computing of the theoretical maximum density, evaluation of initial asphalt content in designing sma mixture and computing of rut index. at the same time suggestions for improvement are offered. subsequently, through research on asphalt and modified asphalt with ldpe test and by means of indoor test of sma mixture, the detailed analyses for the modified asphalt with ldpe and road performance of sma is discussed, finally, the applicable method and principal of sma mixture design in jiangsu province was recommended

    本文以廣東省交通廳年度科研項目《 sma推廣應用研究》為依託，採用理論與實踐相結合的方法，首先從理論上分析了sma混合料的力學及結構特點，對現行的sma配合比設計以及試驗中最大理論密度的計算、初始瀝青用量預估和車轍指標等問題進行了較為詳盡的闡述與分析，並提出了相應的改進建議；然後再通過對瀝青與改性瀝青試驗、 sma混合料室內試驗等，對pe改性瀝青以及sma混合料的各項路用性能的試驗結果進行了較為細致的分析，最後提出了適合於廣東地區sma設計的方法原則。
  8. Probability density evolution method for analysis of stochastic structural dynamic response

    隨機結構動力反應分析的概率密度演化方法
  9. Standard test method for determining density of structural lightweight concrete

    測定建築輕質混凝土密度的標準試驗方法
  10. The tffa model calculation has been carried out to investigate the effects of structural parameters of the afc cathode and pemfc cathode on the electrode performance, which is respectively represented by the curve of cathode overpotential versus current density and the curve of cathode potential versus current density

    本文運用tffa模型分別考察了afc陰極過電位?電流密度的曲線和pemfc陰極伏安曲線受陰極結構參數變化的影響程度。
  11. The researching objects in the present work are those pm products with high strength, high density and high wear - resistance, so the conclusions are worthwhile for the development of high quality pm structural products in our country

    同時，本課題研究的對象是粉末冶金三高（高強度、高密度、高耐磨性）產品，其研究結果對我國高耐磨粉末冶金結構材料有指導和借鑒的意義。
  12. 9. tauari : origin of south america. wooden features : density 0. 75 - 0. 85g cm3 ; timber scattered holes, light yellow core material, texture direct, structural details, strategic uniform with shiny ; no special odor

    木材特徵：氣干密度0 . 75 - 0 . 85g cm3木材散孔，芯材淡黃色，紋理直，結構細，略均勻，具光澤無特殊氣味。
  13. Structural timber - determination of characteristic values of mechanical properties and density

    結構木材.機械性能和密度特徵值的測定
  14. Standard test method for density, oil content, and interconnected porosity of sintered metal structural parts and oil - impregnated bearings

    燒結金屬結構零件和油浸軸承的密度油含量和互連孔隙率的標準試驗方法
  15. Considering the randomness of physical parameters ( elastic module and mass density ) of structural materials, the structure dynamic characteristics is analyzed based on probability, and the distribution parameters of dynamic characteristics random variable is derived from the rayleigh s quotient

    在此基礎上，構造了具有頻率或頻率禁區可靠性約束的工程結構動力優化數學模型，並對其中關切頻率的估定，兩種頻率約束的統一表示等進行了討論。
  16. Directionally solidified refractory metal matrix eutectic in - suit composites possess excellent mechanical and physical properties such as low density, high enduring temperatures, good room - temperature fracture - toughness and high elevated - temperature strength, therefore are expected to be used as a new type of ultra - high temperature structural materials

    定向凝固難熔金屬基共晶自生復合材料由於具有密度低、承溫能力高、室溫斷裂韌性好、高溫強度高和高溫持久壽命長等性能優勢，有望成為新一代航空發動機葉片用超高溫結構材料。
  17. In the paper, firstly, present the formulation and application of proper orthogonal decomposition of covariance and cross - power spectral density matrices are presented in the analysis of wind load effects on structures. then the dynamic response of linear structures subjected to random loads is analyzed by a technique called double modal transformation ( dmt ) that is expressed through a double series whose terms depend on structural and loading modes

    本論文中首先通過求相關矩陣和互功率譜密度矩陣特徵值問題給出了本徵正交分解的公式，並利用pod與結構模態相結合的雙模態方法來分析結構的動態響應，主要討論了截斷高階荷載模態對風致響應的影響。
  18. We have been produced high fluid structural lightweight aggregate concrete which apparent density is 1800kg / m ~ 3 and 28d compressive strength is 50 ~ 60mpa by

    對軸心抗壓強度、抗折強度、彈性模量和抗滲性能的檢測表明，所配混凝土具有良好的物理力學性能和耐久性。
  19. By changing the contents of blowing agent and the inner size and changing the density distribution of structural polyurethane foam, the influences of the inner structure on the properties of gradient density polyurethane foam were investigated

    摘要通過改變發泡劑用量和採用不同密度泡沫組合，來改變聚氨酯結構泡沫整體的密度分佈，研究了梯度密度聚氨酯泡沫塑料的性能。
  20. Liner plate is made of high mn high - quality carbon constructional steel, so its hardness achieves hrc58, structural density is very high, which can not be achieved by other liner plates

    襯板採用高mn優質碳素結構鋼製成，硬度達到hrc58 ，組織密度極高，其他襯板遠遠達不到。
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