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The lower chord board’s steel is cold-rolled ribbed reinforcement (LL650), the number is 58, its diameter is 5 mm.
Journal of Wind Engineering & Industrial Aerodynamics, Dec. 2003 [3] Zhengrong zhang ,Yong lan:in Chinese (Grain circulation technology, 1997) [4] Bin luo, Zhengxing guo: in Chinese (Special structure 2003) [5] Xinyou wu :in Chinese (Construction technology 1999) [5]Yuefang zhao, xingli fan :in Chinese(Grain &oil warehouse technology communication.1999)

Currently the main austenitic stainless steel grades for piercing jewelry are 301, 302, 303, 304(L), 316(L), 317(L), etc, they have several main problems as follows: Pitting corrosion and crevice corrosion problems The carbon content of stainless steel has evident effects on corrosion resistance, with the increasing of carbon content, the amount of chrome carbide precipitating around grain boundary and the probability of forming chrome-poor area would increase, which would accordingly result in the greater tendency of intercrystal corrosion in corrosive medium.
The pitting corrosion resistance of stainless steel can be calculated by PREN(Pitting Resistance Equivalency Number), PREN = Cr+3.3Mo+20N[5], from this formula we can figure out that the PREN of 301, 302, 303, 304(L), 316(L) and 317(L) is 17, 18, 18, 19.0, 24.2 and 29.7 respectively, which show that the pitting corrosion resistance of 316 (L) and 317 (L) are better than other grades.
Most jewelries need to be polished to mirror finish, it requires not only operators correctly implement the polishing process specification, but the characteristics of jewelry material itself is critical, for example, the material should have compact structure, small and even grain, no shrinkage porosity, gas porosity or inclusion, etc, otherwise the product will easily occur such defects as orange peel, polishing sag, scratch..

By increase of the rotational speed; the number of impacts of the brushing tips into the surface in a certain time is increased while at the same time the impact energy due to the higher impact speed and the stiffness of the brush wires are also increased.
Ruano: Grain refinement of Mg-Al-Zn alloys via accumulative roll bonding, Scripta Materialia, 51 (2004), 1093-1097
Zhao: An Ultrafine-Grained AZ31 Magnesium Alloy Sheet With Enhanced Superplasticity Prepared by Accumulative Roll Bonding, Journal of Iron and Steel Research International, 14, 5 (2007), 167-172

Table 4 Road construction scheme Structural layer material type Thickness(cm) modulus (MPa) Poisson's ratio Asphalt wearing course SMA-13 (SBS modified bitumen) 4 300 0.35 Asphalt binder course medium-grained asphalt concrete (AC-20) 6 500 0.35 coarse-grained asphalt concrete (AC-25) 8 700 0.35 Asphalt anti-fatigue layer asphalt stabilized macadam 15 1000 0.35 Lower base layer graded gravel 20 500 0.35 Cushion layer lime-ash soil 30 300 0.2 soil base soil base - 40 0.4 Author uses road design software to calculate the maximum shear stress of asphalt surface and asphalt layer’s internal maximum structural shear stress under heavy wheel load when force of 100Kn is applied..Standard axle load is 100KN, wheel pressure 0.7MPa, single axle load 160Kn which appears at an accumulated percentage of 95% when conducting actual road research is adopted as heavy wheel load.
[4] Transportation Research Circular, Perpetual Bituminous Pavements, Number 503, Washington D.C., 2001

A number of authors have studied the influence of aggregate composition on lime mortars.
Nevertheless, the grains of quartz aggregate have more rounded shapes in a manner (Figure 2).
Grain size distribution of the aggregates and the filler.

Because multi-valences of vanadium make it capable of forming several numbers of oxides and VO2 can appear as polymorph structures.
The higher temperature contributes to an escape of oxygen from grain boundaries, resulting in better crystallinity of the V2O3 films.
The VxOy species with enough energy diffuse and coalesce together to form the crystalline phase and grain growth.

From Fig. 1, we can see nano powder particles has irregular shape, almost present a square prism, because of little scale, its high surface activity leads to agglomeration, nano-magnesium powder of commercially available are vacuum packaging, when mixed with PTFE, place them into the glass box is a must and mix them rapidly once picked out to avoid growing and agglomerating into large grains.
From Fig. 2 (a) it can be found that commercially available PTFE powder is like loose powder and has an appearance of small grains.
From the thermal decomposition curve of Fig.3 above , we knew micro-magnesium get a weight of 130% but competed with the long chain cracking of PTFE in this process, weight loss is 31.43% in number and the total weight loss of the reaction is 61.3% the next step is a slow course of weight loss, it’s the breaking process of short chain into monomer C2H4 completed by a weight loss of 29.94%, the decomposition process continued until 873 ℃well above the nano-magnesium of 770℃ exemplifies that the nano-magnesium shorten the degrading time significantly.

Description of type TEG1-241-1.4-1.2: TEG Thermoelectric is the code for Thermoelectric Generator, 1 is consists of 1 layer (single layer), 241 is the number of pairs of n and p is 241, which means there are 482 junctions, 1.4 is semiconductor grain cross section (1.4 x 1.4) mm, and 1.2 is Grain height 1.2 mm.

Comparison of different repair technologies takes into account time required for particular operations, number of subsequent steps and properties of materials as bond strength to the substrate and durability under expected loading.
For investigation the commercial repair materials were chosen: • low grain size (up to 8 mm) concrete, based on alumina cement (ACC), • polymer-cement mortar (grain size up to 2 mm) based on Portland cement (PCC) Bond strength were measured by pull-off and WST tests in relation to the surface roughness of the concrete base, measured after substrate pretreatment.

FTIR spectra of TiTe3O8 powders in suspensions with TEA and in the wave number range between 500 cm-1 and 4000 cm-1 is shown in Figure 5.
After sintering at 700 ºC for 5 h, TiTe3O8 films present a quite well dense microstructure (fig. 7 right image) in which cubic-like equiaxed grains with average grain sizes of ~ 3 µm characterized the obtained films.