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Introduction The strengthening mechanism of second-phase particles in steel mainly includes precipitation strengthening and fine grain strengthening.
When the steel temperature reached 1600 ºC, kept it for 10 minutes; (2) Taken 0 # steel sample (original steel sample); (3) Quartz tube inserted into the bottom of molten steel, following a certain volume (about 0.2 L/min) argon as the carrying gas, a certain sized of MgO·Al2O3 spinel powder with 1.0 g was sprayed into the steel; (4) The beginning of time (0min); (5) Taken 1 # steel sample after 1 min; (6) Taken 2 # steel sample after 10 min; (7) In accordance with the above (3) - (6) steps to continue the spraying experiment, the steel samples obtained by sequence number until the total spraying quantity reached to 5 g.
The total number of inclusions decreases with the increasing size of sparying powder, and the average particle size of inclusion increases with the increasing size of sparying powder, while the total area of inclusions changes little.

Select the numbers of those uniform-grained specimens without serious defects as test materials.
However, a too high salt concentration will lead to aggregation or precipitation of dye in the solution and in the process of fixation, a large number of Cl ions will hinder the affinity substitution reaction between dye molecules and fiber, thereby decreasing dyeing effects.

However, with further increasing thickness of ITO layer, the number of layers will increase, because each layer has its own coefficient of thermal expansion, the bonding strength will decrease too [5].
Therefore the suitable annealing temperature and the number of layers for strong adhesion and stable performance of ITO films is 500℃ and four.
The size of In2O3 is small (16.5 nm), so the value of the resistivity is mainly related to the grain boundary scattering [6].

Table 1 The physical indexes of pumice aggregate Grain size（mm） Bulk density (kg/m3) Apparent density (kg/m3) Density (g/cm3) Voidage （%） Porosity (%) Cylinder pressure strength(MPa) 5-15 342 660 2.5 44.8 73.6 0.8 2.2 Sample preparation Mixed by hand, the cement mixed with the absorbent, then added into concrete.
Tab 2 Concrete mix and test results number Concrete mix 28d compression strength（MPa） Apparent density（kg/m3） cement water sand pumice Crashed stone CB EP Water reducing agent 42# 468 220 616 1096- - -- - 34.6 2460 43# 380 162 609 374 -- - -- 3.8 16.2 1470 44# 380 162 609 374 -- 3.8 -- 3.8 15.6 1460 47# 380 162 609 382 -- -- -- 3.8 6.1 1500 2.3 Performence test The reflectance value R was taken as the evaluation indexes of the absorbing properties of the material[16], namely, R=, where Er and Ei mean the electric field strength of the reflection wave and incident wave, respectively.
The incorporation of pumice introduced a large number of bubbles in concrete, which reduced the effective permittivity of concrete materials, so as to improve the resistance matching performance between material and free space, and achieve the purpose of the electromagnetic wave absorption.

.), and biomass particle (such as spore, pollen, grain and phytoclasts); in artificial sources, there are mainly such black carbon particles as exhaust gas from the burning of fossil oil and smog from the burning of biomass.
Usually, primary aerosol particle has a large particle size and high mass concentration, but its number concentration is low, so it can only make little contribution to haze, and it’s mainly is under the control of emission intensity.
According to data, the number of the outpatients with respiratory disease was increased by about 20% in Beijing’s major hospitals; coincidentally, that was increased by 30% in Shanghai’s hospitals, and most of the patients suffered from chronic obstructive pulmonary disease and asthma.

Table 1 Two kinds of insert types Insert number Insert type and grade For short 1 SNMG120408-MF1 CP200 CP200 2 SNMG120408-NM YBG102 YBG102 Fixed feed rate f=0.1mm/r; cutting speed v=80m/min, 100m/min, 130m/min, 170m/min, 210m/min; at each cutting speed, select cutting depth of 0.1mm, 0.2mm, 0.3mm for turning high temperature alloy GH2132 cutting temperature and tool wear test.
Fig. 5 and Fig. 6 show respectively the two inserts wear SEM when cutting speed is 170m/min cutting depth is 0.1mm.As the iron-based superalloy is very sticky, in the cutting process, the tool rake face and flank bonded a large number of GH2132 adhesive material Fig. 1 Cutting temperature curve when ap=0.1mm Fig. 2 Cutting temperature curve when ap=0.2mm Fig. 3 Cutting temperature curve when ap=0.3mm Fig. 4 Two inserts wear cure (a) ×200 (b) ×500 (a) ×100 (b) ×2000 Fig. 5 CP200 wear SEM Fig. 6 YBG102 wear SEM (see Fig. 5(a), Fig. 6(a)) .with the constant relative motion of chip, workpiece material and the cutting tool, some of the grain of cutting tool materials will be bonded to the chip and workpiece material, and be taken away leading to rake face and flank severe adhesive wear.

Slope soil employed the fine sand, which the solid grain density is 2.70 g/cm3, the minimal dry density is 1.14g/cm3, and the maximal dry density is 1.65 g/cm3.
The section profile of the built three-dimensional finite element mesh is shown in Fig.6, in which the element employs the 8-node hexahedron and the number of element and node are 1,396 and 1,268 respectively.
Fig.7 Horizontal Displacement Distribution of Slope at 9.0s (Unit: m) The dynamic finite element calculation not only verifies the results of the macroscopic deformation of the measure points in the dynamic centrifuge modeling test, but also effectively overcomes the shortcomings of the limited number of testing points, gives the distribution of the slope displacement.

During the course of industrial production, a large number of polluted industrial waste gas with heavy metal are discharged into the air, a large number of polluted industrial waste residue and waste water with heavy metal are discharged into the air to be discharged into the river, therefore, the soil around the city polluted by heavy metal pollution becomes more and more serious [3].
Treatment Technology of Polluted Soil with Heavy Metal Heavy metals in polluted soil not only directly results in the drop in grain production, but also eventually endanger human health through the food chain with the help of water, air, plants and other medium.

Experimental result Fig.3 shows a S-N diagram of stress amplitude and number of cycle to failure.
Fig.4 Fatigue fracture schematic diagram The 5083 aluminum alloy with dispersion strengthening heat treatment process has good mechanical performance and small grain diameter.
Fatigue and fracture crack growth of aluminum alloys at very high numbers of cycles.

The number of unstable slope increases year by year and harm increases too.
After carried out, the core should manner number timely and identification and sealing wax, work, and then carried out in accordance with the relevant procedures for sample processing and experimental research.
Influence mainly depends on rock grain size, pore size, the condition of transition, clean degree and contain of hydrophilic minerals and other factors.