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But during polishing, the property of the pad will deteriorate resulting in reduced polishing rate and planarity[4], which is caused by "cold flow" of pad material[5].
Acknowledgements The authors appreciate the financial support for this research by the National Natural Science Foundation of China in general program under grant No. 50390061 and the National Science Fund for Distinguished Young Scholars under grant No. 50325518.
Sikder: Materials Science and Engineering Vol. 45 (2004), p. 89-220
Jin: Chinese Journal of Mechanical Engineering Vol. 39 (2003), P. 100-105
Li: Chinese Journal of Mechanical Engineering Vol. 16 (2005), P. 815-818

The Research of Feeding Device Based on Virtual Reality Technology: Journal of Beijing Institute of Graphic Communication Vol.18 (2010), P.21. ].
Virtual exp experiments and initial ink vibrating phase angle optimization of offset press based on virtual prototyping: Journal of Southeast University (Natural Science Edition) Vol.41 (2011), P.101-105. ].
Then create a 2D frame in Virtools, and give the processed interface picture as new material to the two-dimensional frame to complete main interface of system.
Then double click the Push Button module and chose two kinds of state image for the Released Material and Pressed Material respectively.
Acknowledgements This work is supported by Tianjin application foundation and advanced technology research program, the Natural Science Fund Emphasis Project (No.12CZDJC20300).

Safety Assessment for CNG Vehicle Energy Storage -supply System Dehai Chen 1,2,a, Changsheng Fu 1,b 1 Jiangxi University of Science and Technology Ganzhou, China 2 Wuhan University of Technology, Wuhan, 430070 aemail:13414569@qq.com, bemail: 1275517130@qq.com Keywords: CNG vehicles, Energy storage and supply system, Security Assessment, Fault Tree Abstract.
Conclusion Based on the concept of active safety, detailed study and mastered the structure of CNG vehicle energy storage and supply system and the mechanism of technological object(such as system design, pipeline, shockproof structure, materials, valves, electric control device, detection device etc.), On this basis ,we build a system of risk assessment and optimization of energy storage and supply system for CNG vehicle using FTA analysis.
References [1] A.Amendola,D.R.Wilkinson: Journal of Hazardous Materials,2000,78(1),ix～xiv [2] ZQ,Xu.XF,Song,ML,Li: China Safety Science Journal,2006,16(12), 80 [3] BZ,Cheng.M,Wu :Joumal of Safety Science and Technology,2008,4(3),79-83 [4] Q,Wu.KL,Xu: China Coal Industry Publishing House,2002 [5] PC,Sui.BZ,Chen.X,Sui: Chemical Industry Press,2005 [6] QC,Liu.: Shenyang Aerospace University,2011

Introduction The detection for small particles in flow is concerned in many research fields which include the environment science, the material science, and the biology science and so on.
The outer side of the flow cell is square which dimension is 334.5mm, and its material is also the quartz glass.
[3] Xuantao Su, Yuanyuan Qiu, Leah Marquez-Curtis, and et al: Journal of Biomedical Optics, Vol.16 (2011) No.6, p. 067003-1-067003-17
[6] Luo Wenbo,Leong Jik chang,Tsai chien-hsiung , and et al: Journal of Functional Materials and Devices,Vol 14(2008) No 2, p. 436-440.

Set up material model, the material parameters are shown in table 1.
Therefore, in addition to considering the general structure design factors, pressure plate design should also consider the factors such as rubbing surface structure, non-rubbing surface structure and material volume, etc.
Generally the friction coefficient of material reduces with the increase of temperature.
Zhang: Journal of Jiangsu University of Science and Technology, Vol.17 (1996) No.2, p.32
Liang: Journal of Chongqing Jiaotong University(Natural Science), (2013).

A New Method of Designing Underwater Towed System Dakui Feng1-2, a, Weiwen Zhao1,b, Wubo Pei2,c, Yacheng Ma1,d 1College of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China 2Yichang Testing Technique Research Institute, Yichang 443003, China afeng_dk@mail.hust.edu.cn, bpanda0986@smail.hust.edu.cn, cwb_pei@163.com, dm19900616@yahoo.cn Corresponding authors: Weiwen Zhao (1990- ), Male, Master (E-mail: panda0986@smail.hust.edu.cn) Keywords: towed system; cable; design; Runger-Kutta; numerical simuilation Abstract.
It also depends on cable materials and the maximum tension of towed system.
Project supported by: National Natural Science Foundation of China (20110019) References [1] Wang Fei.
Journal of Hydronautics, 5 (4), 126-131 (1971)
Marine Technology Society Journal, 4 (4), 27-44 (1970).

This study shall discuss how to analyze the materials of stock and stock index futures trading by means of data mining and analyze the relevance between stock index futures and Shanghai Composite Index to support the investment decisions in buy-in before sell-out or sell-out before buy-in and improve the returns on investment.
Journal of Chengdu University (Nature Science Edition) Vol.28 No.3 Sep. 2009 [2] CHAI Ming-liang, SONG Su: Application of association rules in stock analysis.
Journal of Chengdu University (Natural Science), Vol.21 No.4 Dec.2002 [4] ZHAO Yong-jin, WANG Shi-qing: Application and Research of Association Rules in Stocks Analysis.

Experimental Materials Silvergrass (80 mesh) was obtained from Yueyang Paper Co.
Journal of Applied Polymer Science.
Journal of Polymer Research.
Polymer Engineering and Science.

Jiang a Faculty of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, China a jiang@csust.edu.cn Key words: Lognormal distribution, Failure rate, Change point, Service life, Product quality Abstract.
Acknowledgement The research was supported by the National Natural Science Foundation (No. 70771015).
Part II: Fatigue, Journal of Constructional Steel Research, 2004, 60(6), P. 825 - 839
Prescriptive vs. performance-based methodologies, Construction and Building Materials, in press
Chang, Optimal burn-in decision for products with a unimodal failure rate function, European Journal of Operational Research, 2000, 126(3), P. 534 - 540.

Acid and alkali resistance of aloe yarn Test apparatus and materials: water bath; pHS-25 digital pH meter; glacial acetic acid; hydrochloric acid; NaOH; Na2CO3.
Food Science, 2003, 24(6):158—161
Ningxia Agricultural Academic Journal, 1999, 20(4):75—79
Hunan Agricultural Science，2009(1):98-103
Neijiang Teachers College Academic Journal, 2004(6):66-69．