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The reason of this result is that the materials happened heat expansion and lead to the radial pressure increased; PTFE composites molecular is liberating the glass-like bound when work temperature from 100℃ to 200℃, and it happened the transformation process of high elastic state molecular.
With the crystallization changing of material, carrying capacity and wear resistance of piston ring material were improved.
(2) The feasibility of equations is been verified by the material experiment of piston.
Advanced Materials Research, 2012, (510):54-58
Journal of Hebei University of Science and Technology 2008, 29(1):53-56

Materials and Experiment Method 2.1 Raw Materials Cement: the design strength grade of core concrete is required for C50 and above.
We keep the ratio of binder to sand at 0.44 and the ratio of water to binder at 0.33 as constant by adjusting the amount of expanding agent and fly ash in order to control the total amount of binder materials.
Journal of China & Foreign Highway, 2004（12）: 54-58
Journal of Construction in Low Temperature, 2005(1):16-19
Journal of the Chinese Ceramic Society. 2002, 28 (5): 1-5

The so-called building energy efficient technologies, materials and items are means technologies, materials and items which pass examinations of relevant authorities and be identified as advanced, mature and suitable to building energy efficiency work.
In light of the development of new technology of building energy efficiency and the manufacture of new energy-efficient materials and items need enterprises spending large amount of capital and time, compared with manufacture of traditional materials and items, the market popularization of energy efficient products has the characteristic of time lag.
The more profits enterprises get, the more investments they will do in the development and product of energy-efficient technology and materials, items.
Behavioral science and energy conservation: conceptualizations, strategies, outcomes, energy policy applications[J].
Journal of Economic Psychology, 1983(3).

Examples One of our challenging issues was to find different materials that have all the necessary properties listed.
Unfortunately, different references only provided bits of information for some materials and in our long search we could come up with 3types of fiber and two types of matrix the properties of which are listed in Table 1 ([7],[9]).
Journal of Material Science Letters 1999;18;1203 [2] A.
Mechanics of composite materials, Taylor & Francis, 1999 [8] T.
Mechanics of composite materials, Taylor & Francis, 2006 [10] P.Y.

Along with the rapid development of chemical industry and the progress of science and technology, there exist safety risks for a large number of risk source pipelines.
Introduction Along with the rapid development of chemical industry, many industrial factories, tank farm and warehouse store with a lot of dangerous chemicals, most of the hazardous chemical materials of an inflammable, explosive, toxic and harmful and corrosive.
It can also be used for the rescue sealing for gas, heat, and water pipes; l It is reusable, thereby saving material and energy, making a great environmental improvement.
[4] V.M.Fthenakis:A.Rev.Critique.Compassion.Models.Journal of Loss Prevention in the Process Industries, (1999),p525 [5] Williams B R:The prediction of separated flow using a viscous-inviscid interaction method，The Aeronautical,Vol.89. (1985), p181

China Sports Track and Field Coaches training materials summarized the characteristics of our athletes as follows: highlight the "three fast" training of the speed utilization, fast run-up, fast touching the board and fast take-off; full play advantages of their own characteristics.
References [1] Yin Jun Zhong, Jia-yin etc, Effect of Vibration Strength Training on Changing of Muscle Power of Hip Joint of Long Jumpers, China Sprot Science and technology, 2009(6)
[2] Mroelants.c delecluse, Effects of 24 weeks of whole body vibration training on body composition and muscle strength in untrained females , International Journal of Sports Medicine, 2004
[4] Tang jianfeng etc, The Experiment Study of Vibration Strength Training to Muscle Strength of Ankl, Zhejiang Sport Science, 2005(3)
[5] Wei xiaoyan etc, Research on the Effects of Vibration Stimulated Strength Training on Muscular Strength, Sport Science Research, 2004(4).

Figure 2 shows the material flow, electricity flow and value flow between each entity.
The materials include commodities and greenhouse gases.
Procedia Environmental Sciences, 13 (2012), pp. 1602-1608 [5] Z.
Journal of Sustainable Development, 6 (2013), pp. 19-31 [8] Y.
Higano: Studies in Regional Science, Vol. 26 (2007), pp.181-187.

The scope of the evaluation including site planning, energy and atmosphere, water saving, materials and resources, the indoor air quality and technology innovation.
This is the first evaluation system about the ecological housing in China, and it is formed by five sub- projects: the planning and design about the residential, energy and environment, the indoor environment quality, the water environmental in residential, materials and resources.
At the same time, the technology innovation and promotion level, and the energy-saving materials promotion level in the market play an important role to evaluate whether the energy-saving technology which used is feasible or not in the construction of towns and villages housing.
Journal of Anhui Agriculture Science.
Forum Vol. 5 (2009), p. 3336-3337（In Chinese） [4] Weiying Zhang: Game Theory and Information Economics Journal of Anhui Agriculture Science (Shanghai People's Publishing House, China 1997)

Indeed, natural stone materials have a sufficiently high degree of durability.
R. problems of involvement of waste of mining production in economic activity / / Construction materials-2016. - № 7. – Pp. 62-65
Periodization of development of the industry of nonmetallic construction materials: assessment of the passed way and a look into the future // Building materials ‒ 2013. - №1. - P. 16-19
Terminology of the new generation concrete science / / Building materials. - 2011. - №3. - P. 103-106
Sciences: 05.23.05-Penza. - 2011. - 148 p

V=1/u is reluctance rate for the materials.
Algorithm type of materials is set as default, in which Maximum Newton Iterations: 30, Newton tolerance: 1%, Polynomial order: 3, CG: 0.001%.
Main deviation source are materials properties, modeling deviation and measurement deviation.
Permanent magnet materials are general of 5~10% deviation of the actual samples of the materials provided by manufacturers, while the definition of material properties is considered as an ideal state, which is the main reason for deviation.
Xie: Journal of Shenyang University of Technology.