| 词汇 | example_english_porous |
| 释义 | Examples of porousThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. X-ray streak camera is used for evaluation of the speed of energy transfer through the porous foam material. Effects of salt concentration changes during freezing on the unfrozen water content of porous materials. Discussion was itself understood as enacting social change - it was the sign of a more porous but also more rational society. In general, the evidence is that biofilm that is closest to the substratum has the highest density, while the top layers remain "fluffy" and porous. Coupled parallel flows in a channel and bounding porous medium of finite thickness. Experimentally, it has been proven that the fine porous nano-structure of aerogels does not affect the ion energy loss and charge state distribution. The porous medium is endowed with a heterogeneous microstructure. The dissolution and precipitation of crystals in porous media have been studied also in [7, 12] and [14, 17]. In such systems the initial sample would be prepared and separated by standard electrophoretic or porous membrane techniques. The features of plasma dynamics caused by a discrete structure of porous media were taken into account. A three-phase ensemble-averaged model is developed for the flow of water and air through a deformable porous matrix. A similar relationship between average pressure gradient and velocity in macroscopic flow in porous media involves a proportionality parameter known as the permeability. The theory has been applied to both impermeable and porous stationary and moving journal-bearing systems. The transition for the large increase in lift due to the porous medium occurs at order one. We investigate the propagation of the two fluid layers along a horizontal, impermeable boundary of a porous layer. We apply the basic mechanical equations to the ideal flow through the duct with the porous wall (figure 12). The sputtering model considered here may require significant modification for the case of highly fluffy and porous meteoroids. They rarely have multiple routes to participation and leadership is rarely porous. Both dry snow powder and the endothelial glycocalyx share a common property that they are highly porous and easily compressed. 85 organic-matter-rich soil from these farms to be more porous and less compacted than soil from the deep-tillage conventional farm34. Besides, cooling agent penetrates into the porous layer, dissolves and washes out soluble fractions of corrosion products and replaces them with insoluble compounds. In porous sandstones, however, development of deformation band shear zones is often favoured over formation of through-going faults or fractures. The key to success is the adoption of production methods which cause minimal disturbance to soil which is healthy, biologically active, self-restructuring and appropriately porous. Properties of averaged capillary relation are described in the particular case of a two-component porous medium. Finally, in 5, the homogenization is done for a randomly inhomogeneous porous medium. Finally, we analyse the last aspect of the model, that is the heat diffusion problem throughout the porous layer. Then we consider a one-dimensional porous layer, represented by [0, 1], neglecting possible deformations induced either by the flow or by thermal variations [3, 4]. The saturated porous medium is homogeneous and isotropic. The porous medium is assumed to be composed of grains. The boundary between politics and play could be very porous. The biofilms appeared porous, with pores and channels in between the microcolonies. All components of the rock, except the obsidian cobbles, are susceptible to weathering and are easily transformed into clay, as the matrix is quite porous. To control plasma density, low density and porous materials are often used as laser targets. Indeed, flow in vegetated areas such as wetlands can be understood as a flow through a porous medium. In terms of geometrical properties of the medium, the most appropriate is to simplify the problem postulating that the porous structure is periodic. The second type of angiosperm wood (less common) is characterized by solitary, diffuse porous vessel arrangement. 0 !, where w is the thickness of porous wall. The mechanical properties and handling difficulties of porous garment are introduced. The specific feature of low-density porous agar is its inhomogeneity. Thus, the boundaries between internal and external language ecologies are porous. As will also become apparent, the cause of this replication again is the refusal to acknowledge the porous nature of the state. Starting from simple play-type hysteresis equations for unsaturated porous media, we derived an effective hysteresis model. The results are applicable to the problem of the stability of a viscous liquid of variable density to two-dimensional disturbances in a porous medium. Everything is fluid and has porous boundaries except for that mass of undissolved science. A 0.08-mm-diameter copper-constantan thermocouple was attached with porous, adhesive tape to the abaxial surface of each leaf. The fluid-saturated porous layer is homogeneous, isotropic and bounded by two infinite horizontal planes kept at constant temperatures. If scientific reasoning is so porous to context, what prevents theories from being entirely subjective? Two factors prevented the government's design to achieve a porous but peaceful border from having the desired effect. Despite the potential for the widespread occurrence of porous grains in nature, there have been few attempts to calculate the thermal properties of such grains. However, the experimental evidence of natural convection in an internally heated fluid in a porous layer exhibits a peculiar scatter near the onset of convection. Therefore, evaporation of adsorption water in porous soil happens on time scales, which exceed those of sublimation of water ice by orders of magnitude. Numerous shock-wave experiments for aluminum have been done to measure shock adiabats of crystal and porous samples, release isentropes, and sound speed in shocked metal. Stiff clay or peaty soils produced smaller harvests during a shorter growing season and at greater cost and effort than more porous soils. In a novel like this one the distinction is extremely porous. However, the situation is dramatically different for larger porous or non-porous organic grains. The shape stability of the reaction interface for reactive flow in a porous medium is investigated. One may easily generalize this simplified example to multi-component porous media with any finite number of components. Non-isothermal flows in porous media with curing straight line parallel to the time axis. What is perhaps interesting is that the porous media analogy concerns primarily steady flows. The homogenization problem is considered for the equations of two-phase flow in porous media with a periodic or random small-scale structure of inhomogeneities. An important property of the porous medium equation is the occurrence of waiting-time solutions. Of course, this model is not be applicable to all porous media, as the heterogeneities in some materials may obey different statistical laws. The influence of hydrodynamic dispersion on thermal convection in porous media is studied theoretically. The influence of heat dispersion on porous convection is investigated in this paper. Detailed studies of particle flow properties in a size range relevant to flow in porous media is now possible. A significant feature of these functions is that the velocity disturbance penetrates farther into the porous medium than does the density disturbance. A field experiment to study the behavior of tetrachloroethylene in unsaturated porous media. Vegetation should not be harmed by a porous tephra ground layer, which might also have facilitated drainage. Once in the subsurface, contaminants can flow through porous media in vapor phase, dissolved phase (soil- water), and as free product. Television, and the music it carries, is porous. The tufa facies is a highly porous limestone with spar ry calcite filaments ar ranged into a dendritic web. We will consider diffusion in a porous medium. Throughout history, hadhar and badu have always been porous categories and the distinction was never clear, regardless of what the ongoing discourse may claim. They are thus living proof that the two categories are porous. The first sur face of the blanket is of generally accepted wetted porous design. We used different solid targets with a laser- and electrochemically modified sur face layer: craters, pyramidal cavities, porous silicon, gratings. One way to overcome such limitation is to use a sample with reduced density ro porous or foam target!. As a rule, the film has two-layer structure formed by a dense thin solid layer adjacent to the metal base, and a porous external one. Free convection along a vertical flat plate embedded in a porous medium is considered, within the framework of boundary layer approximations. The theory was later extended to anisotropic porous media [3]. 5 mm, and solid grains have lower temperatures than porous grains. In addition, the aquifer form and the hydraulic gradient must be such that the flow does not destroy the porous medium. Experimental studies of the cratering process in porous ice targets. A possible force mechanism associated with the freezing of water in porous materials. We find the averaged equations for the hysteresis problem in unsaturated porous media. In the case of highly contrasting local properties of the porous medium, different homogenized models are available. The same approach evidently applies to mathematically equivalent problems of flows through porous media. A non-toxic, nonadsorptive conservative bulk fluid dye was used to capture images of flow channels in the biofilm/porous media matrix. Losses through the porous limestone can also be expected to be high. Pump-down times are correspondingly increased for these larger and more porous samples, which should be well dried before evacuation. In the building, however, the projecting bookcase and light reflecting paintings render the masonry wall porous, even transparent. Under such conditions vapours diffuse through the porous surface layer. Both these particles are porous grains that display detailed fine structure of their subgrains. In such a case, sputtered ions will mostly be trapped within the porous matrix and thus not contribute to momentum transfer. Our system may be considered as a one-dimensional porous medium with only one pore size. Bodies here are a porous material where skin is less a limit than a portal. More porous, less compacted soil structures on the rotation and no-till farms may also play a role in reducing runoff volume. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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