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Sawdust or broken fiber materials whose granularities are rough are crushed into the wood powders that are in line with size of the requirements for power generation through triplex impact effects such as impact effect between particles and the dynamic and static cutters, impact effect between particles and particles and impact effect between particles and the shell[5].
In addition, inlet for the feed materials hole is still set up.
Research on Superfine Wood Powder Disintegrator with Multi-granularity Used in Power Generation .Key Engineering Materials,2009.09:505-507
Advanced Engineering Materials,2009.11:405-408
Study on the raw material of wood flour in power generation and design theory of grinding equipment[J].Journal of Anhui Agricultural Science, 2008.20:8640-8641.

Acknowledgement This research is supported by the National Natural Science Foundation (No.60972130) of China.
(http://www3.imperial.ac.uk) References [1] Y.Jiao, F.H.Stillinger, S.Toruqato: Modeling Heterogeneous Materials via Two-Point Correlation Functions: I.
E Vol.76 Iss.03 P.031110 (2007) [2] Y.Jiao, F.H.Stillinger, S.Toruqato:Modeling Heterogeneous Materials via Two-Point Correlation Functions: II.
JOURNAL OF PETROLEUM TECHNOLOGY Vol.56NO.5 P.69-70 (2004) [11] D.B.
Journal of Colloid and Interface Science Vol.236Iss.2 P.295-304. (2000) [12] Yelena Sholokhova, Daesang Kim, W.

Shrinkage porosity is formed as atmospheric gases penetrate through this zone compensating for contractions and the lack of material.
Diószegi: Submitted to International Journal of Cast Metals Research (2008) 3.
Dugic: Eight International Symposiums on Science & Processing of Cast Iron, Beijing, China (2006) 5.
Julien: AFS Cast Metals Research Journal, Vol. 9 (2), pp. 105-109 (1973) 6.
Svensson: Materials Science and Engineering, A 413 - 414, pp. 474 - 479 (2005) Fig. 9.

Therefore, materials for the tool, regardless of their chemical composition and method of production, must have: high hardness and wear resistance of the surface in combination with sufficient plasticity or elasticity of the main part of the tool.
However, today non-standard approaches to the strengthening of materials, including friction and deformation [1], chemical-thermal treatment [2–6] and others, are becoming increasingly important, especially if it does not require significant economic costs.
Volkov Study of heat deformation influence in surface strain hardening of steel by thermofriction processing, Eastern-European journal of enterprise technologies. 2 5(80) (2016) 38–44
Abdullah, Effect of boronizing medium on dispersion layer of austenitic stainless steel, ARPN Journal of Engineeringand Applied Sciences. 10(17) (2015) 7821–7824
Knyazev, Features of structure formation of surface layers with high content of boron on steel 15Х11МF in the conditions of furnace and induction heating, Ceramics: Science and Life. 2 (47) (2020) 26–30.

For a long time, the city residential understanding only pay attention to residential and other material elements, rarely to further analysis of the system structure of urban settlements.
The urban settlements reflect the development of both material and spiritual civilizations, whose development and construction reflects the needs of urban residents [1].
Li, Urban residential area of public service facilities construction and its influence factors, Anhui Agricultural Sciences, Vol. 39 No. 11 (2011) 6835-6836, 6838
Zhang, China's urban community public service facilities disposition present situation and the planning and implementation of research, Journal of Humanistic Geography, Vol. 22 No. 5 (2007) 29-33
Su, Supporting public service facilities in residential planning and design thinking, Journal of Residential Science and Technology, 3 (2002) 20-22.

Materials and Methods Description of sampling sites.
Riekstina, Effects of malvidin, cyanidin and delpinidin on human adipose mesenchyman stem cell differentiation into adipocytes, chondrocytes and osteocytes, Phytomedicine Journal. 53 (2019) 86-95
Agasheva, Elemental composition of the fruits of common lingonberry and marsh cranberry, Chemistry of plant materials. 4 (2017) 229-233
Holmstrom, Multi-element analysis of wild berries from northern Sweden by ICP techniques, Science of The Total Environment. 231(1), (1999), 53-65
Research Journal of Environmental Sciences. 3 (2009) 581-587.

Among the built projects, the largest area of the building is 325000 ㎡, which is located in the Development Zone of Anshun, Guizhou Province, southwest of building materials and furniture, the column net are 12m×12m, 15m×15m, 18m×21m, the height of RC open-web sandwich plate structure is (L/28), the live load is 5KN/㎡, the cost is 360-400 Yuan per square meter.
The Fig9 shows the record of RC open-web sandwich plate structure of southwest of building materials and furniture.
We do a lot of works in this new type space structure from theory to practice, the structure will be a new type structure in the field of space structure science in china.
Journal of Building Structure, 1991, 18(6): 55-64
Journal of Building Structure, 2000, 21(6): 16-23

Materials and Methods The effects of external heat radiation on combustion characteristics and toxic gas release of flame retardant cables, which were XLPE insulated, flame retardant PVC sheathed and steel armoured cables, were investigated.
Fan, X.F, Du, et al., Tracing and Analysis on Combustion Test Standards of Electrical Wires and Cables, Insulating Materials, 2015, 48(9): 6-11
Green et al., Assessing the fire performance of electric cables (FIPEC), Fire and Materials, 2001, 25(2): 49-60
Chen et al., Study on the Flame Retardation and Smoke Emission of Flame Retarded Polyethyleneterephthalate with Cone, Polymer Materials Science and Engineering, 2002, 18(6): 202-204
Li et al., Study on Combustion and Toxic Gas Release Characteristics of Flame Retardant Cables, Insulating Materials, 2016, 49(8): 72-77

Davis, Aluminum and Aluminum Alloys, ASM Specialty Handbook, ASM International, Materials Park, OH 440730002, 1994
Tabereaux TMS (The Minerals, Metals & Materials Society), 2004
Maijer, Modeling of microporosity formation in A356 aluminum alloy casting, Chemistry and Materials Science, Metallurgical and Materials Transactions B. (2006) Volume 37
Metallurgical and Materials Transactions B. (2007) Volume 38B
Santos, Predicting dendrite arm spacing and their effect on microporosity formation in directionally solidified Al-Cu alloy, Journal of Materials Science 40. (2005) 1599 – 1609.

Loss of energy within the tyre materials produced heat as they deformed on passing through the contact area with the ground [3].
Their major contribution was in lowering the cost of materials by replacing the more expensive polymer; other possible economic advantages were faster molding cycles as a result of increased thermal conductivity and fewer rejected parts [7].
Materials and Method Below is the rubber formulations used in this study: Table 1.
[8] Mohd Bijarimi, H.Zulkafli, and M.D.H Beg, “Mechanical Properties of Industrial Tyre Rubber Compounds”, Journal of Applied Sciences 10 (13) pp1345-1348, 2010
H,”A New Flexometer to Predict Heat Generation of Truck Tires” Tire Materials Development, Bridgestone Corporation, Tokyo, Japan. 148th Meeting of American Chemical Society, Division of Rubber Chemistry, 1995 [11] ISO 4666/4.