This paper is concerned with the global existence and exponential stability of weak solutions in H~1 and H~2 for a real viscous heat-conducting flow with shear viscosity The system describing this type of flow is derived from the general 3-D Navier-Stokes equations.
本文研究关于H~1,H~2空间中一个具切边粘性实际粘性热传导流体方程组弱解的整体存在性和指数稳定性,这种流体方程组是三维空间下的Navier-Stokes方程。
In the production of compound fertilizers, some essential factors such as the viscosity of raw materials, hygroscopic point, solubility, the compatibility among different substances, must be taken into account for easy manufacture and high quality product.
为获得易造粒,产量高,成球率高,颗粒圆整度好的优质产品,根据生产复混肥原料的粘结性不同,吸湿点、溶解度的差异,不同原料间的配伍性,并结合多年的生产经验,介绍在复混肥配方中应如何把握物料的适度粘性,沙性物料的适度比例,提高物料吸湿点的方法,干燥物料的适度用量等。
The author attributes the phenomena to the stickiness in the economic gradient process and sets up simple stickiness model and grey clustering model to explain it.
本文认为其原因是我国区域在梯度推移过程中存在着粘性,并分别建立简单的粘性模型和灰色聚类粘性模型进行分析。