relative surface area 中文意思是什麼
relative surface area
解釋
相對表面積-
The dynamic characteristics of evaporation process for naphtha and crude oil were researched in three aspects of different wind speed, evaporation area and relative location of evaporation surface to ground in wind tunnel
摘要從環境風速、蒸發面積和蒸發液池與地面相對位置3方面分別對石腦油和原油的蒸發動力學特性進行了風洞實驗研究。 -
A bearing surface transmits the interaction between an arch dam and its foundation, the strength of which directly affects the constraint of the bedrock to the dam, and thus affects the stress and deformation of the dam. the influence is studied in this paper with nonlinear finite element method, as an example, for a high arch dam in design. the results show that the influence on stress is only limited within the local area near the bearing surface, larger on the maximum principal tensile stress than on the principal compression stress, and the decrease of the strength does not cause unlimited increase of the maximum stress. the influence on the displacement of the top of the dam is smaller than that of the bottom of the dam, especially the relative downstream displacement. at the lower strength of the bearing surface, the relative downstream displacement at the bottom of the dam increases with the decrease of the strength
建基面是傳遞拱壩和基巖相互作用的紐帶，它的強度直接影響基巖對壩體的約束，從而影響壩體的應力和變形.採用非線性有限單元法，以設計中的某高拱壩為例，分析建基面強度對壩體應力和變形的影響.結果表明建基面強度對壩體應力的影響僅限於建基面附近的局部范圍，對最大主拉應力的影響要大於對最大主壓應力的影響，建基面強度的降低不會無限地增大壩體的應力數值；建基面強度對壩頂位移的影響較小，但對壩底位移（尤其是順河向相對位移）的影響較大，當建基面強度較低時，壩底順河向相對位移隨建基面強度的降低而增大 -
Abstract : based on the basic concept of the revolving shell, the equation of the middle surface generatrix of the approximate ellipsoid portion of the ellipsoidal head is derived, the unwrapped area and the unwrapped diameter of the ellipsoidal head are calculated, the result is compared with that of derived from the real ellipsoid and that of calculated from the empirical equation, relative chart and code are given out, which could be used by manufactures for reference
文摘:根據回轉殼體的基本概念，推導了橢圓封頭的近似橢圓殼部分的中面母線方程，據此推導計算了橢圓封頭的展開面積及展開圓直徑，並根據橢圓殼幾何形狀推導的結果與經驗公式所得結果進行了比較，給出了有關圖表及計算程序，可供製造單位參考使用。 -
The relationship between relative evapotranspiration and leaf area index and surface soil water content in winter wheat field of north china plain
華北平原冬小麥相對蒸散與葉面積指數及表層土壤含水量的關系 -
It was found that the introduction of ca2 + enhanced the sinterability of the material. the relative density of sintered specimens increase with the content of ca2 + in the composition range of 0 < x < 0. 3. it was confirmed that a high relative density can be obtained at relatively low sintering temperatures by using uniform, high surface area la1 - xcaxcro3 powders, which modifies the crystalline structure and microstructure of ceramic specimens
研究結果表明， a位ca ~ （ 2 + ）的引入在一定程度上能夠降低材料的燒結緻密化溫度：細小、均勻、高比表面積的粉料能夠有效降低材料的燒結緻密化溫度；燒結溫度的降低可以減少la _ （ 1 - x ） ca _ xcro _ 3中液相含量和鉻氧化物的揮發，有利於材料晶體結構、顯微結構的改善。
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