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References [1] Yao jingming, He fulian, Xu jun, et. al..Energy mechanism of coal bump and its application[J]Journal of Central South University (Science and Technology), 2009, 40(3)：808-813
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A lower-half of the volume chamber of 240mm x 20mm x 20mm is occupied by the porous media from the aluminum material.
Liu, Effect of duct aspect ratio on heat transfer and friction in steam-cooled ducts with 60 angled rib turbulators, Experiment thermal and fluid science, vol. 49, (2013), pp. 123-134
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In recent years, with the development of nanotechnology, nanometer materials as the lubricant additive become possible[1-3].
Acknowledgements This work was financially supported by the Tangshan Science and Technology Bureau (11150201A-10).
Yu, et al.: submitted to Journal of Tribology (2011) In Chinese
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Materials Characterization.
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The Effect of Additive on Temperature Rising Characteristics during Coal Pyrolysis in Microwave Field Quanrun Liu1, a, Hao Xia2,b 1School of materials science and engineer, Henan Polytechnic University, Jiaozuo 2School of materials science and engineer, Henan Polytechnic University, Jiaozuo aqrliu@163.com, bxiahao2799@163.com Keywords: Coal, Carbocoal, Microwave field, Microwave absorbent, Pyrolysis Abstract.
Besides, not all materials can be heated to reach the tempreture which pyrolysis need by absorbing microwave,because microwave heat selectively.
Experimental Experimental Materials.
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In graphic design, material collecting is the key task to capture relevant design materials according to 3D model design needs.
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Titanium powder (elastic modulus: 120000Mpa, Poisson's ratio: 0.3) is the chosen material for this study, because it has good biocompatibility and corrosion resistance.
Acknowledgements This study was supported by National Natural Science Foundation of China. (50972086) and the Science & Technology Project of Xianyang Shi (2010K15-04).
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(in Chinese) [4] Cai Shengyong and Xi Juntong: Journal of Mechanical Engineering, Vol.45 (2009), p.297-304.

They are key factors to maintain material cycle, provide energy, and affect the whole function of wetland directly[5].In natural wetland environment that having a distinct material gradient, the change of microbial community structure can effectively reflect the soil and vegetation characters.
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Introduction Fretting is a special movement that occurs at the contact area between two materials under load and subject to minute relative motion by vibration or some other force.
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