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Flow rates of TES and H2 are 0.5 sccm and 2.0 slm (a), 0.3 sccm and 2.0 slm (b), 0.3 sccm and 6.0 slm (c). 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 Raman Shift (cm-1 ) Intensity (arb.units) ( c ） ( a ） ( b ） -4 -3 -2 -1 0 1 2 3 4 Δω (deg) Intensity (arb.units) 3C-SiC (111) ( c ） FW HM = 0.79 ° ( b ） FW HM = 1.10 ° ( a ） FW HM = 1.29 ° Journal Title and Volume Number (to be inserted by the publisher) 3 for each growth condition.
The average grain size was estimated about 500 nm.

Net donor concentration distribution for X and Y direction in the 4H-SiC wafer 0.0E+00 5.0E+17 1.0E+18 1.5E+18 2.0E+18 2.5E+18 3.0E+18-25 -15 -5 5 15 25 Positon from wafer center (mm) Net donor concentration (cm-3) X direction Y direction Journal Title and Volume Number (to be inserted by the publisher) 3 shows the net donor concentration distribution in this sample.
Janzén et al. have observed local lifetime reduction at small angle grain boundaries in epitaxial 4H-SiC [1].

Investigate its reason, deposition rate is improved with ascending temperature and then the coating thickness increases, as well as the deposit sites grow in number, which causes that the celluar deposited particles become smaller and the film thickness also increases.
The deposition rate, hardness and corrosion resistance are all good when the optimal temperature is 75℃, and the surface morphology of deposits is cystiform structure, smooth, the grain of crystal and good properties.

Thus an engine of 20:1 OPR is considered more capable than an engine of, say, 10 OPR and will have superior numbers for thrust, fuel burn, etc. to fulfill a given mission.
This design drew heavily on supercharger experience, using mixed axial and centrifugal design and low Mach number can combustors made of steel.
DS blades consist of multiple crystal grains that share a common crystalline orientation in the direction of greatest stress.
Single crystal blades utilize a starter seed of preferred orientation and carefully prescribed Bridgeman cooling schedules; competitive nucleation and grain growth are suppressed by proprietary methods.
Single crystal casting eliminates all grain boundaries from the component, maximizing creep strength and thermal fatigue resistance, and also eliminates diffusion pathways for oxygen to maximize corrosion resistance.

Using astronautical mutation breeding technique, a lot of new high-produced and well qualitative grain crops, cash crop flowers and antibiotics have been bred home and abroad.
Table 3 The percentage of polymorphous place in astronautical mutated “Zhaodong” alfalfa’s different individuals Lines Mutant line-1 Mutant line-2 Mutant line-3 Mutant line-4 Mutant line-5 Mutant line-6 Mutant line-7 Mutant line-8 Mutant line -9 Mutant line-10 Amount of site 108 110 97 103 100 111 109 118 124 128 Number of the polymorphic site 10 13 2 6 3 14 12 21 27 31 Rate of the polymorphic site % 10.31% 13.40% 2.06% 6.19% 3.09% 14.43% 12.37% 21.64% 27.84% 31.95% Discussion The results showed that genetic variation exists among different “Zhaodong” alfalfa mutants.

But a large number of overflow bubbles influence the safety of equipments and cause the adverse effects of the site conditions.
Especially for long duration, the crystallization of gypsum particles is long, and the size of grains is big.

The gravel grain grading ranges from 4.75mm to 37.5mm.
Table2 Comparison between computed values and observed values Depth /14cm Observed Values differences value Differences in ratio values 143.7[] 36.5[] 180.2[] 151[] 29.9[] 16.7 Acknowledgements This work was financially supported by An Hui province-level Natural Science project for the period of 2009-2010(project number:KJ2009B079Z).

After optimization of heat treatment process for the production, uniform microstructure, austenite grain size is very small (see figure 4 ,  5 ,  7 ,  8 ), Not only ensured the General mechanical performance of drill pipe, improved product toughness reserves, increases security.
Tab. 6 Mechanical property of three kind samples Number Tensile strength MPa Yield strength MPa Elongation% 30CrMnSiA 1# 904 823 6 30CrMnSiA 2# 932 854 4 42CrMo 1# 980 887 12 42CrMo 2# 1060 885 11.5 45MnMoB 1# 998 901 14 45MnMoB 2# 966 891 15   Performance data for three materials make graphics such as figure2 .

As the tool material, cemented tungsten carbide of 0.6 µm grain size (FM10K, A.L.M.T.
Increasing the number of grooves and reducing the groove pitch will make it possible to fabricate a nonstepped reverse taper.

In fact, the mother of the glaze and crystallization associated peripheral crystal grain occasionally uneven nanoscale phase separation structure of diffraction and opalescence behavior is affected glazed coloring, emulsion and gloss level of an important structural factor.
The enamel matrix is larger uniform micron-scale crystals, bubbles, white glaze group size larger than the wavelength of the incident light is produced by reflection and refraction of the whole band, the number, the more opaque glaze degree is also higher, so that glaze showing a strong jade texture.