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The 3Cr-1Mo-1/4V steel is the material of the canister of the heat-wall-hydrogen-reactor, it is the anti-heat and anti-desquamation steel, and is a special difficult-to-machine material whose adhering is serious.
Acknowledgements The research were supported by National Natural Science Foundation (51075108), China Postdoctoral Science Foundation (20090451013), Natural Science Foundation of Heilongjiang Province (E200919), Key Project of Chinese Ministry of Education (209034), Support Program for Key Youth (1154G39), Foundation of Heilongjiang Educational Committee (11551079) and Youth Foundation of Harbin University of Science and Technology (2009YF005).
Tao, Chinese Journal of Mechanical Engineering 36, (2000) 10-15
Nee, International Journal of Advanced Manufacturing Technology, 24 (2004) 9-14 [3] Y.
Wang, Key Engineering Materials, 329 (2007) 669-667.

The materials used for making dentures should own good machining properties and biocompatibilities.
Elastic modulus of enamels is 46GPa-130GPa, thus the elastic modulus of denture materials should also be in this range. (5) Appropriate hardness (The hardness of dental materials should be close to the hardness of natural teeth.
Mechanical properties of materials mainly relates to the strength and hardness.
Van, Engineering long term clinical success of advanced ceramic prostheses, Journal of Materials Science: Materials in Medicine, 18(1) (2007) 47-567
Jeffrey, Ceramics for restorative dentistry: Critical aspects for fracture and fatigue resistance, Materials Science and Engineering C, 27(2007) 565-569

This paper presents a dynamic urban landscape design, a variety of traits city weather conditions, urban context, materials technology, biological populations, ecological flows were studied.
Due to different cities in different geographical and climatic conditions, cultural folk customs and habits, designers and creative thinking through basic mastery of relevant expertise on the basis of respect for the city humanities, science and technology and flexible use of modern technology and new materials, skilled master and urban regional culture appropriate to the landscape design, which is already under cultural heritage landscape design consensus.
Jones, J.Gwilliam: An evaluation of outdoor and building environment cooling achieved through combination modification of trees with ground materials, Building and Environment, Vol.58 (2012), p.245-257 [6] M.
Deng: Design and Key Technology of Urban Landscape 3D Visualization System, Procedia Environmental Sciences, Vol.10 (2011), p.1238-1243 [10] K.
Blackledge: Small wind turbines in turbulent (urban) environments: A consideration of normal and Weibull distributions for power prediction, Journal of Wind Engineering and Industrial Aerodynamics, Vol.121 (2013), p.70-81

Composites are made of two or more material combined to create a new compound with desired properties.
Ishak, et al., "A Review on Pineapple Leaves Fibre and Its Composites," International Journal of Polymer Science, vol. 2015, pp. 1-16, 2015
Sarasini, "Mechanical and thermal characterization of epoxy composites reinforced with random and quasi-unidirectional untreated Phormium tenax leaf fibers," Materials & Design, vol. 31, pp. 2397-2405, 2010
Amornsakchai, "A new approach to “Greening” plastic composites using pineapple leaf waste for performance and cost effectiveness," Materials & Design, vol. 55, pp. 292-299, 3// 2014
Kortschot, "A simplified fabrication process for biofiber-reinforced polymer composites for automotive interior trim applications," Journal of Materials Science, vol. 49, pp. 2630-2639, 2013.

Fatigue Properties of Smart Electrorheological Materials S.B.
The first two ingredients directly indicate materials and design aspect, respectively.
This property is very important in choosing both electrode materials and compatible ER materials associated with engineering applications.
Thompson: Smart materials and structures, (Chapman & Hall, London 1992) [2] W.H.
Choi: Proceedings of the IMechE: Part D- Journal of Automobile Engineering Vol. 217 (11) (2003), p. 999 [6] G.M.

Firstly, redesign the building materials.
Wang Fei in the Center of Materials Science and Technology of NUDT for his help with the test of SEM.
Katti: Materials Science and Engineering C, Vol. 26 (2006), p.1317
Li: Materials Science and Engineering C, Vol. 11 (2000), p.19
Muyco: Journal of the Mechanical Behavior of Biomedical Materials, Vol. 1 (2008), p.76.

One of the primary raw materials in producing PU foam is polyol, mainly derived from petrochemical feedstock.
However, their thermal properties can be enhanced by incorporating phase change materials (PCM).
Phase change materials are materials that is also called as latent heat storage where it can store and release large amounts of thermal energy from one phase to another (solid, liquid, or gas) at relatively constant temperature [7].
Methodology Materials.
Ogbonneya, Polyurethane foam production using sunflower oil and soybean oil as polyol and surfactant, International Journal of Modern Science and Technology. 4 (2019) 48-53

The efficiency of these developed materials, however, is still low at present.
Nevertheless, the catalytic activity of PTA mainly depends on the type of support materials.
Low interaction between PTA and support materials will result in the difficulty of loading[4].
Fig. 4 Raman spectra of as-prepared materials.
Van Tendeloo, Journal of Materials Chemistry, 21 (2011) 1226

Introduction Laminated plate shell structures have been widely used in aerospace, construction, machinery, the National Defense Science and other fields, and the analysis of design has also been concerned by people [1,2].
Other material parameters, poisson’s ratio Fig.3 1/4 Cylindrical shell , density; cylindrical shell subjects to weight, curved boundaries are supported by horizontal diaphragm, straight edges are free.
References [1] S.Jayasankar, S.Mahesh, S.Narayanan and Chandramouli Padmanabhan: Journal of Sound and Vibration Vol. 299(2007), P.1-11
[4] Xu Yanhai, Jia Liping, ZhangJianwu: Chinese Journal of Applied Mechanics Vol. 20(2003),P.110-113, in Chinese
[5] Shen Xiaoqin, Li Kaita: Journal of Xi an Jiaotong University Vol.41(2007), P.1483-1486,in Chinese

Not only different materials have different characteristic dimensions, but also the same material may have different characteristic dimensions because of diffident processing.
Compact Damping Models for Laterally Moving Microstructures with Gas-Rarefaction Effects[J].Journal of Microelectromechanical Systems,2001,10(2): 263-273
Derivation of Porous Squeeze-Film Reynolds Equations Using the Brinkman Model and Its Application [J].Journal of Physics D: Applied Physics,2001,34: 3217-3223
Squeeze Film Damping Effect on a MEMS Torsion Mirror [J].Journal of Micromechanics and Microengineering, 2002, 12: 556-561
International Journal of Engineering Science, 2003, 41: 313-335