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- In the CGT region,the relation between turbulent Reynolds stress and mean velocity gradient is nonlinear. CGT區域內雷諾應力與平均速度梯度呈非線(xiàn)性關(guān)系。
- Objective:To investigate the value of myocardial velocity gradient(MVG) in diagnosis of myocardial ischemia. 目的:探討跨壁速度梯度(MVG)在診斷心肌缺血中的應用價(jià)值。
- In the CGT region, the relation between turbulent Reynolds stress and mean velocity gradient is nonlinear. 逆壓梯度時(shí)，湍動(dòng)能負產(chǎn)生率區域不復存在，此時(shí)CGT區域從有到無(wú)，也是呈 先增大后縮小的趨勢，并最終消失；
- While the half angle increases, velocity gradient in a microdiffuser decreases and so does the average vorticity. 此外，受到流道內部速度梯度降低的影響，平均渦度值會(huì )隨半角增加而下降。
- The results showed large pressure gradient and velocity gradient of the material in the four intermeshing regions. 計算結果表明:四螺桿的四個(gè)嚙合區具有較大的壓力梯度、速度梯度,其混合性能明顯好于雙螺桿擠出機。
- The above mentioned detachment is characterized by wedge with negative velocity gradient (shown with LVL) above R1 interface between Samada and Dagyi. （2）上述拆離層在薩馬達一達吉之間，以R1界面之上的負速度梯度楔狀體（LVL）為特征。
- Then the authors explain hypostasis of the velocity gradient and vortex, and make a try to unify the vortex coagulation theory and the conventional coagulation theory. 從根源上解釋了紊流流場(chǎng)中速度梯度和旋渦的產(chǎn)生，試圖把最近發(fā)展的渦旋混凝理論與傳統的混凝理論進(jìn)行統一。
- The pressure gradient and velocity gradient of the extrudate in the central area were small, and the extrudate fllowed slowly in the central area, having high viscosity. 中心區的物料壓力梯度和速度梯度都較小，物料在中心區流動(dòng)緩慢，中心區的物料粘度值較大；
- The results show that a large velocity gradient emerges in the intermeshing region of the screw reactors, which is helpful to mix materials sufficiently. 結果表明，螺桿反應器的嚙合區具有較大的速度梯度，有利于物料的充分混合。
- Velocity|related indices derived from MPD including peak velocity of S wave, E wave and A wave, A/E and MVG (myocardial velocity gradient) were applied for the detection of WMA. For evaluation of WMA, left ventricle was divided into 20 segments. 用于室壁運動(dòng)分析的 MPD速度指標為 S波、E波、A波的峰速度 ,A/ E比值及跨壁速度梯度 (MVG)。
- This paper analyses the kinematic characteristic of underwater EFP by using finite element analysis software ANSYS/LS-DYNA,and studies preliminarily the variation of the EFP's velocity gradient and shape in water with time. 本文以EFP本身為研究對象,利用有限元分析軟件ANSYS/LS-DYNA對魚(yú)雷聚能戰斗部EFP在水中的運動(dòng)特性作了數學(xué)仿真分析,模擬了EFP在水中運動(dòng)自身的速度梯度、EFP的形狀等隨時(shí)間的變化,對EFP在水中運動(dòng)自身的速度梯度和形狀等參數隨時(shí)間變化規律做了初步研究。
- The method is testing the particle sheer stress, velocity gradient at different speed of rotation by adopting different particle density and different particle diameter suspensions. 試驗結果與拜格諾試驗的結果完全一致，將其結果延伸，所采用的試料更加符合生產(chǎn)實(shí)際。
- The ratio of the magnitude of an applied shear stress to the velocity gradient that it produces; that is, a measure of a noncrystalline material's resistance to permanent deformation. 剪切應力數值與其產(chǎn)生應變速率的比值叫粘性,用來(lái)衡量非晶材料抵抗永久變形的能力。
- Comparing with the incompressible flow, nonlinear pressure distribution is obtained due to the compressibility effect.Both pressure and velocity gradient reach the maximum value at the outlet. 與非壓縮流場(chǎng)比較，壓縮效應使得壓力分布呈非線(xiàn)性分布，且在出口處壓力梯度與速度梯度同時(shí)達到最大值。
- shallow water with negative sound velocity gradient 負聲速梯度淺海
- This is the inverse of his earlier proposition. 這和他早些時(shí)候提的建議截然相反。
- Gazelles can move with astonishing velocity. 羚羊跑起來(lái)速度驚人。
- Lashing velocity of pump is concerned with nature of air. 泵的抽氣速率與氣體的性質(zhì)有關(guān)。
- The car was moving at such a velocity! 那輛汽車(chē)的速度簡(jiǎn)直太快了！
- Gazelles can movewith astonishing velocity. 羚羊跑起來(lái)有時(shí)速度驚人。
