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The pressure grade, temperature grade and material grade of wellhead should adjust to the well condition.
Journal of Southwest Petroleum University (Science & Technology Edition), 2011,33(2):137-141 in Chinese.

Statistical Tolerance Analysis Based On Constraint Satisfaction Problems and Monte Carlo Simulation Yong-Jun JIANG Faculty of Mechanical Engineering, Inner MongliaUniversity of Science&Technology, BaoTou, China jxxjyj@imust.cn Keywords: Tolerance analysist; mechanism; QCSP; Monte Carlo Abstract: This paper deals with the mathematical formulation of tolerance analysis.
Chang, A comprehensive review of tolerancing research, International Journal of Production Research 40 (11) (2002), pp. 2425–2459
Using tolerance-maps to represent material condition on both a feature and a datum.

ShiSteel is a famous special steel manufacturing enterprise at home, and the products are very competitive in market, 40% of which supply automotive parts and components industry, 35% supply industrial equipment industry, which are the raw material suppliers of FAW, DFAC (DongFeng Automobile Co., Ltd), Sinotruk, Caterpillar Tianjin Toyota forging company and so on well-known enterprises.
Elements in Liquid Steel and Nickel．Journal of University of Science and Technology Beijing, 1992,14(3):85-93.

Study and Application of SSC Model on Hot Rolling Wide Strip Mill Huaqiang Liu 1, a , Fei Zhang1,b , Shi Yin1,c , Xin Li2,d 1National Engineering Research Center of Advanced Rolling Technology, University of Science & Technology Beijing, Beijng100083, China 2Plate Mill of Baotou Iron and Steel Group Corporation, Baotou 014000, China aLhuaqiang@163.com, bzhfeicn@gmail.com, cYinshi@163.com, dLiXin@163.com Keywords: Hot rolling strip; Short stroke control; FEM; Width Control; Edge roll Abstract.
The asymmetrical material flow in the edger roll gap is the main cause of this width necking.
Zhang: Journal of Jilin Institute of Chemical Technology, Vol.25 (2008) No.4, p. 40

Problem of thin linearly elastic plate bending For a model problem, we consider a thin plate in the square , which is clamped at the boundary and is made from the homogeneous linearly elastic material characterized by the constant elasticity module and the Poisson coefficient .
A Gradient Recovery-based a Posteriori Error Estimators for the Ciarlet - Raviart Formulation of the Second Biharmonic Equations (2007) Applied Mathematical Sciences, 1, 21, pp. 997 – 1007
An a posteriori error indicator for discontinuous Galerkin approximations of fourth-order elliptic problems (2011) IMA Journal of Numerical Analysis, 31, pp. 281–298

Applied remote monitoring integration technology in the fieldbus control system, through the network remote solving the problems in the process of production, can save manpower, material and financial resources, and has convenient maintenance and maintenance timely characteristics.
Journal of Nantong Institute of Technology(Natural Science).

Box. 2, H-4010 Debrecen, Hungary a janos.toman@science.unideb.hu, b yusuke_iguchi@centrifuged-gravity.jp, c gajdicsbd@gmail.com Keywords: Kirkendall effect, diffusion, nanoscale, vacancy, sinks and sources, simulation Abstract.
In each computational cycle the total amount of material transported between the neighbouring slabs was calculated, from which the change of composition and thickness of the slab were determined.
Feyerherm, Linear growth kinetics of nanometric silicides in Co/amorphous-Si and Co/CoSi/amorphous-Si thin films, Journal of Applied Physics, 104, 024311 (2008) [29] B.

Yet, this intrinsic characteristic has spurred recent research on developing Mg-alloys as a novel material for biodegradable implants (e.g. stents).
Acknowledgements This work was supported by the Agency for Science Technology and Research, Singapore (A*Star) through the project SERC 092-137-0018.
Injury-International Journal of the Care of the Injured, 27 (1996) 16-22 [9] A.

Research of Zero Stress Temperature Gradient in Cement Concrete Pavement Xiang-Shen Hou1, a, Xin-Kai Li 1, b, Bo Peng 1, c, Guang-Hui Deng 1, d 1School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin150090, China 2The Architectural Design and Research Institute of Guang Dong Province, Guangzhou510010, China ahouxiangshen@126.com, blxkhit@126.com, cpb198976@163.com, ddgh1987@126.com Keywords: cement concrete pavement; built-in curling; zero stress temperature gradient Abstract.
In addition, Armaghani, Janssen, Hveem and many other scholars’ summary of main influence factors on cement concrete pavement built-in curling are the early environment factors [5,6,7,8] and cement concrete material’s own properties [9].
Journal of Transportation Engineering. 136(7) 654-663.(2010)

According to the definition, during the process of power grid project budget compiled in actual, combined the characteristics of power grid project, we usually consider the BRF has three parts as follow: l The cost for project changing or the expenses of material substitution, which is generated in the process of design implementation, and in the range of approval design by superiors.
Acknowledgements This work is supported by National Natural Science Foundation of China (71171081) and Program for New Century Excellent Talents in University (NCET-11-0633).
Journal of Catastrophology, Vol. 28(2013), p. 55-60.