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In material quality of the reduction jar, the metal material of heat resisting alloy steel, the metal-nonmetal composite material, and the nonmetal material of ceramic are effective at high temperature and under perfect vacuum condition[5-7].
The density of the body material is ρsteel=7770kg/m3.
[15] Hongguang Jia, The finite element method for circular creep of thick-wall cylinder, Journal of Qinghai University 16 No.4 (1998) 25-39
[16] Xiaying Mu, Jiwei Wang, A new way to solve steady creep problem with finite element method, Journal of Aerospace Power 8 No.2 (1993) 170-206
[20] Ruifeng Wu, Certain questions in creep theory, Science Press, Beijing, 1961.

Scandinavian Journal of Medicine & Science in Sports, 2010, 20(s2): 1-10
Journal of Sports Science and Medicine, 2010, 9(1): 154-160
Exercise and Sport Sciences Reviews, 2004, 32(2): 44-49
Human Movement Science, 2004, 23(2): 105-119
Journal of the Mechanical Behavior of Biomedical Materials, 2017, 74: 1-10

Materials and Experimental procedures Materials and Equipments.
Acknowledgment This work was financially supported by the the National Natural Science Foundation of China (51275233) and the Aeronautical Science Foundation of China (2012ZE52068) for supporting this study.
Journal of Microelectromechanical Systems Vol. 11 (2002), p. 102–110
Journal of Micromechanics and Microengineering Vol. 11 (2001), p. 20-26
Journal of Micromechanics and Microengineering Vol. 7 (1997), p. 121-124

So to decrease the max stress (von Mises), SolidWorks allows to optimize our design on the basis of criteria that we have defined, we can reduce the use of materials or the weight of our design using the optimization of shapes technology.
Doctoral School No. 432: Engineering Sciences P11, p37-38 [3] Haluk Kucuk.
The Spine Journal 4 (2004) 303S–309S [8] J.
Material considerations for intervertebral disc replacement implants.
University Bordeaux 2 - victor segalen u.f.r. medical sciences.( 2007 ) P13 [21] J.

Materials and Methods 2.1Materials Tilapia averaging 400-500g were bought alive from local supermarket.
Journal of Food Science, 70(7), s490-s496
Journal of Chromatography A, 880(1-2), 35-62
International Journal of Food Science & Technology, 42(10), 1139-1147
Microchemical Journal, 93(2),232-235

The present paper summarises the findings collected over several years of study of materials structure and surface properties.
The larger the resulting track (deeper, wider), the poorer is the material’s resistance to friction loads.
Journal of Materials Engineering and Performance, 2002, Vol. 11 (3), pp. 294-300
Material Characterization, 1996, Vol. 37, pp. 81-88
Laser surface modified ductile iron by pulsed Nd:YAG laser beam with two-dimensional array distribution, Applied Surface Science, 2005, Vol. 245, pp. 316-321.

The synthesis of hexafluoropropylene oxide in fixed-bed reactor using HFP as raw materials and molecular oxygen as oxidant is studied in the present paper.
Introduction HFPO is an important perfluorinated oxygen compound; it has become the intermediate product of many important organic fluorine materials of functionality because of the unique chemical activity of its three-ring structure [1,6].
Reference [5] presents the influence of different materials of the reactor on the reaction.
Acknowledgment Thanks for the support from the Ministry of Science and Technology for this sub-topics of 863 Project (2004AA329010).
[5] Xinkan Chen, Preparation of hexafluoropropylene oxide [J], Fluorinated materials, 1988, (3):9-15

Combination of the two, materials can be selected. 
References [1] School of Metallurgy and Materials Residual stresses at the surface of automotive suspension springs.
Journal of materials science ,35 (2000), pp.3313-3320
[4] Kotaro Watanabe, KMasahi Tamura and Ken Yamaya: Journal of materials processing Technology,Vol. 111 (2001), pp.132-134
Last spring production process design and optimization of new materials, new technologies and new standards for product quality inspection applications and practical manual.

Experimental results Different sensors based on three kinds of materials are tested respectively, the results is shown in Figure 3, where material 1 stands for NBR, material 2 stands for HDPSF and material 3 represents PTFE.
Experimental results of three kinds of materials Under the condition that the microbending degrees are in same level, the greater the elastic modulus of a gasket is, the wider the range of the sensor measurement can be achieved accordingly.
Acknowledgement This project is subject to natural science foundation of Heilongjiang province (project number: ZJG0607-02).
Journal of Beijing university of posts and telecommunications, 1994 (1): 56-58
Du, Multifunctional fiber optic smart composite materials research [J], Journal of composite materials, 2000 (1): 37-42.

A elliptic air hole and its inscribed circular high refractive material form the core of PCFs together.
PCFs are single-material fibers with an arrangement of airholes running along the full length of the fiber, and they provide confinement and guidance of light in a defect region.
In the core part, one air hole is replaced by a combination of one elliptic air hole and its inscribed circle solid material with high index.
Acknowledgement This work was financially supported by the following funds: (1) the National Science Foundation of China (No.60977020); (2) the Zhejiang Science & Technology project (No.2009C31059); (3) the Zhejiang Province Science Foundation (No.Y1090338).
Osgood: Journal of Lightwave Technique Vol. 19, no.4 (2001), p. 495