concave curve 中文意思是什麼
concave curve
解釋
凹曲線-
Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled
（ 2 ）利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究，通過分析正弦荷載作用下的試驗資料，驗證了粉土的孔隙水壓力增長模式的合理性；從微分方程推導了基於土體振動臺模型試驗的相似律，並從模型實體、孔壓時程曲線和相似律等方面做出了分析，得出了如下結論：在小型振動臺試驗中，模型箱中的粉土都發生了液化，液化的時刻和輸入加速度幅值有關，而對頻率的變化不太敏感；粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化；孔壓的增長曲線形狀與施加的荷載有關：當施加荷載為由小到大的形式時，曲線形狀為上凹的曲線；當施加荷載為等幅的正弦荷載或荷載幅值由大到小時，曲線形狀為上凸的曲線，且逐漸趨于穩定。 -
A market economy with moderate control on finance would encourage financial innovation, and the interrelation between financial control degree and financial innovation creative takes a shape of concave curve. the monopolistic competition as a market construction benefits most to the financial innovation activities, but complete monopoly as another market structure would be most disadvantageous in financial innovation activities
計劃經濟體制下金融集中管制會抑制金融創新，市場經濟金融體系下的相對管制會促進金融創新，且在此管制方式下，金融管製程度與金融創新規模之間呈凸曲線關系；壟斷競爭市場結構最有利於金融創新活動展開。 -
2, the survival curves of populations of e. chloranthoides in jigong mountain and dongwenquan are diagonal, which indicates that the individuals of each age grade within the two populations possesses the roughly identical death rate and the populations belong to the stable ones, while the survival curve of population in beiwenquan is concave, which shows that the population belongs to the increase one
2 、種群存活率曲線表明，雞公山和東溫泉的縉雲衛矛種群存活率均呈對角線型，說明這兩個種群屬于穩定型，而北溫泉種群的存活率曲線呈凹型，屬于增長型種群。 -
The results indicate that the curve is concave when the velocity is very low. 2. motion equation of every kind of flow pattern in porous media is derived by simulated theory
實驗結果表明，在低速滲流階段，滲流曲線為上凹型，到一定流速后，滲流曲線為線型，但不過原點。
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