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Sand Filling and Pouring Silica sand (SiO2) of grain fineness number (GFN) of 40 to 60 is used as mechanical support to the permeable mould [7].
Improper venting was due to the slurry coating thickness has increased when the number dipping process is repeated.

And the application of AWJ is based on the hypothesis such as time mean and special grain shape, their application is limited in studying the rule of gas-solid-liquid three-phase flow.
Re is the Reynolds number, CD is the drag coefficient, v r, s is the terminal velocity correlation for the solid phase.
In this model, 24 eDf C R= (5) where, f is the value of the drag function, C D is the drag coefficient, Re is the Reynolds number.� Model and Parameters Setting During the process of setting up the model inside and outside the abrasive water jet nozzle, the diameter of high pressure water inlet and abrasive inlet is initialized as 2mm, the diameter of three-phase flow outlet is set as 6mm, and the maximal diameter of mixing tube is 16mm., the exterior size of the nozzle is 50mm in diameter and 100mm in length.

This is because that the high concentration of Ferrite/Bainite, Ferrite/tempered martensite inter-phase boundaries, and grain boundaries can be the preferential sites for crack nucleation and propagation [6].
This is because that microstructure of P110 steel is closely full tempered martensite, and the ferrite also includes much dislocation besides a large number of fine carbide particles, both of them form dimples by the manner of the growth and coalescence of microvoids, which results in appearing of a large number of smaller dimples on the impact fracture surface of P110 steel.

In general, however, carbide distributes inhomogeneously in the grain boundaries and on the dislocations.
On the basis of the wave length, the wave number of the modulated structure, ( 2 )mm  , is obtained.
Following Cahn's spinodal theory [2, 3], the square of the observed wave number, 2 m , decreases linearly with increasing temperature (T) and the temperature at 2 0m  gives the critical temperature (Ts) occurring the spinodal decomposition.

The number of measurement has a positive effect on the finial result, which can improve the measurement precise, however, the number of measurement also increases the measurement time.
And the grain features were readily observed.

The number of cracks had influence to the electrodes’ electricity catalytic activity and corrosion resistance.
The increase of the cracks’ number could enlarge the electrode effective area, and then improved the electrodes’ activity.
The average diameters were obtained by means of the Scherrer equation (d = ka/bcosθ, where β is the line broadening (β=βs–β0, where βs and β0 are the half-widths of the XRD peaks of the sample and of the bulk material), k is related to the crystallite shape (k=0.89), and α and θ are the radiation wavelength and Bragg angle, respectively).The Coating grain size of the Homemade electrode is 5nm by the Scherrer equation.

Introduction The refractory metals and their nitrides were mostly polycrystalline structure, the grain boundary between the polycrystalline was become the rapid diffusion path to Cu atoms.
When the substrate temperature increased, the surface diffusion of the adsorbed particles were increased, the number of the particle nucleation was enhanced, which were speeded up the deposition rate of the film.
While increasing the substrate temperature was also raised the number of surface absorption and bonding capacity, which enhanced the film growth rate.

The conditions input to null the freedom degree of the system were: - Pressure: 1.105 Pa - Temperature: 500-1400°C - Number of mol for the system: 1 - Components: Cr, Nb, Mo and Ti; with the following composition: ________________________________________________________________________________ W(Cr) = 0.1839 W(Fe) = 0.1887 W(Mo) = 3.01e-2 W(Al) = 4.8e-3 W(Ti) = 9.5e-5 W(Co) = 2.3e-3 W(Nb) = 5.05e-2 ______________________________________________________________________________ Figure 1 presents the heat treatment applied on Inconel 718, the high solid solution temperature was chosen to optimize the creep behavior, followed by two aging steps: first at 955ºC and then a second aging step of 720ºC/620ºC, to promote precipitation of additional quantities of γ’ and γ”.
Each line number along the graphics corresponds to a phase or state of matter, as follow: 1-fcc matrix, 2-Ni3Nb, 3-Ni3Ti, 4-Sigma, 5-Liquid, 6-bcc, 7-Phase r Figure 2: Stability of phases over temperature range.
The precipitate is located on the grain boundary.

Once you determine the size of the calculation model,a corresponding number of calculation grid is determined, In the program in order to reduce the error caused by meshing, length-width ratio of grid should not greater than 5, For the key research,the grid can be more intense.To sum up, in order to as far as possible consistent with the the geological condition at the same time, considering the modeling is convenient and reasonable.
The entire model from top to bottom in turn for sandy mudstone, fine sandstone, mudstone, coarse sandstone, mudstone, siltstone and fine sandstone, siltstone, sandstone, mudstone, fine sandstone, sandy mudstone, fine sandstone, sandy mudstone, fine-grained sandstone, mudstone, 1# coal, silty mudstone, fine sandstone, mudstone, sandy mudstone, sandstone, 2# coal, siltstone, silty mudstone, 3# coal, shale, siltstone, sandstone, fine sandstone and sandy mudstone, pedestrian roadway located in the 2# coal and sandstone layers.
Constitutive relation of rock and soil is defined by a number of experiments to test small amount of rock, soil elastic-plastic stress - strain curves, and then through the soil plasticity theory and the assumption with certain necessary supplementary conditions, and then promote the results of experiment to the complex stress and composite state to calculate the stress and strain of universal relations; The stress-strain relationship expressed in mathematical expressions, which is called constitutive relation of rock and soil.

Table 1 Experimental Formula Sample Number wt% D0 D1 D2 D3 Silica 5~3mm 8% 8% 8% 8% 3~1mm 30% 30% 30% 30% £ 1mm 50% 50% 50% 50% Nano SiO2 0 0.1% 0.2% 0.3% Silicon Powder 7% 7% 7% 7% Portland Cement 3% 3% 3% 3% Mineralizer 2% 2% 2% 2% Organic Fiber 0.1% 0.1% 0.1% 0.1% Fs10 0.3% 0.3% 0.3% 0.3% Results and Discussion Self-flow value.
With the further increased of nano SiO2 in the samples, the self-flow value decreased, a large number of air bubbles could not be excluded, resulting in the increase of the apparent porosity of the samples.
It is clear that the amount of Tridymite increased with addition of nano SiO2, but when the addition was 0.3wt%, the formation amount of Tridymite of the sample decreased to 30wt%.Because the small bubbles within the sample were too much that preventing the Tridymite grain growth.