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Previous studies have shown that nano materials have significant impact to the toughness, wear and corrosion resistance, thermal shock resistance and good machinable property [7-9].
Tong: Materials Science and Engineering A.
Skeldon, G.E.Thompson: Corrosion Science.
Forum Vol. 51(2009), p. 2897-2905 [7] A.I.Y.Tok, F.Y.C.Boey, X.L.Zhao: Journal of materials Processing Technology.
Hu: Materials Science and Engineering C.

Which method is chosen to analysis the system is depended on the actual situation of the enterprise, which refers to the analysis purpose, material influence, system characteristics, system risk and so on.
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[2] Guoxun Jing: China Safety Science Journal[J], May, 2004, 99-102, in Chinese
[4] Wujin Wei, Lin Baiquan: China Safety Science Journal[J], March, 2006, 118-123, in Chinese

The vibration damping effect of shock absorber devices are not considered because of deficient material parameters.
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(2) File query module To search, update, modify and delete science and technology archives, reproduction archives, honor archives and media archives
It is good teaching material for scientific analysis, strengths fostering and weaknesses circumvent, and development direction making.
Journal of Hydroelectric Power, 2001
Journal of Theory and Practice of Intelligence, 2009 [3] Le Shizhen.
Journal of Science and Technology, 2008 (24) [4] Hua Zhongyu.

The other steel material details are: the elasticity modulus E=2×105MPa, the Poisson’s ratio ν=0.3, the yield strength fy=300MPa and a perfectly elastic-plastic stress-strain relationship is chosen.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51208431), the Specialized Research Fund for the Doctoral Program of Higher Education (20090184120033) and the Fundamental Research Funds for the Central Universities (SWJTU12CX064).
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Building Model of Road Roughness Journal of Chongqing University (Naturel Science Edition), 2004. 27(12) :5~8(In Chinese) [6] Jieping Chen, Wuwei Chen and Hui Zhu et.al: Modeling and Simulation on Stochastic Road Surface Irregularity Based on Matlab/Simulink [J].Transactions of the Chinese Society for Agricultural Machinery,2010,41(3):11~15 (In Chinese) [7] Xiandong Liu, Zhidang Deng and Feng Gao.
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Journal of University of Electronic Science and technology, 2014,01: 119-124
Journal of Chongqing University, 2014,01:31-38
Modeling and Simulation of raw material inventory center based on Petri net.
Journal of Computer Aided Design & computer graphics, 2014,02: 211-216
Computer science, 2014,01: 152-155.

Acknowledgements This material is based upon work funded by Zhejiang Provincial Natural Science Foundation of China under Grant No.LY12F03014.
Journal of Tsinghua University (Science and Technology), 2001, 41(11): 95-97 (In Chinese) [3] ROBERT F.
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Numerical Study on Propagation Lows of Gas Explosion in Roadway Cheng Guoqiang 1, a, Zhu Xueliang 2,b 1 Shandong University of Science and Technology, Qingdao,Shandong, 266510,China 2 Shandong University of Science and Technology, Qingdao,Shandong, 266510,China agqcheng12@gmail.com, bxlzhu86@163.com Keywords: gas explosion, numerical simulation, flame speed, roadway length Abstract.
Fig.6 Flame velocity at each points Fig.7 The relation between transformational of different lengths of pipeline distance and pipeline length When the the pipeline was long enough, and the material ratio of premixed gas fitted to the reaction, flame velocity would get to hundreds or even thousands metres per second, which would brought huge destructive.
References [1] Runzhi Li, Rongjun Si, Yansong Zhang: Journal of Shandong University of Science and Technology Vol. 28(2009), p. 35-39 [2] Baiquan Lin, Rengui Zhang, Henghong Lv: Journal of China Coal Society, Vol. 24(1999), p. 56-58 [3] Jingde Xu, Gengyu Yang: Journal of China Coal Society, Vol. 29(2004) , p. 53-56 [4] Youshan Zheng, Cheng Wang: Transactions of Beijing Institute of Technology, Vol. 29(2009), p. 947-949 [5] Cheng Zhai, Congguang Jian, Baiquan Lin: Jiangsu Coal, Vol. (2004), p. 46-48 [6] Dongliang Chen, Jinhua Sun, Yi Liu: Explosion and Shock Waves, Vol. 28(2008) , p.385-390

Chlamydomonas was gained by training from China Science Institute Wuhan freshwater algae species storehouse .
Acknowledgements This work was financially supported by Water Affair Science and Technology Project of Guangzhou City in 2011.
Du: Journal of Hazardous Material Vol.177 (2010), p.336-343 [3] Z.H.
Cai :Chinese Journal of Public Health (in Chinese) Vol. 21（2005）, p. 1323-1325 [6] Y.H.
Liu : Journal of Shenyang Jianzhu University( Natural Science) (in Chinese) Vol. 22（2006）, p. 829-832 [7] D.G.

In stage 3, the majority of material flow vertically while minority of material at the torx head corner behave side and up flow phenomena, as shown in Fig. 4 (a).
The hardness test of three conditions including the initial material, the material after 500℃ heating and material of extrusion-forging process were carried out and shown in Fig. 11.
The hardness of material after extrusion-forging process is lower than that of initial material.
Jou, Application of numerical simulation for wear analysis of warm forging die, Journal of Materials Processing Technology 140.1 (2003): 43-48 [3] R.U.D.I.
Im, Process design for closed-die forging of bevel gear by finite element analyses, Journal of Materials Processing Technology 192 (2007): 1-7