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The two groups of piezoelectric ceramic piece is launching type piezoelectric piece, the ceramic pieceis was polarized in the thickness direction, which was made of PZT materials.
The structure of double bending transducer was designed to resonance bar of λ/4 size, the materials of amplitude transformer is steels or aluminium.
Acknowledgements This work is financially supported by the Department and Yunnan Natural Science Foundation (2012C095).
Journal of Southwest University of Science and Technology, Vol. 28(2013) p: 79-83 .In Chinese
Science Technology and Engineering, Vol. 7(2007) p:4182-4185.

Therefore, it is widely used in high voltage switch electric electricity contacts, ion electrode materials, air tightness electronic packaging materials and special use military materials (such as the rocket nozzles, the plane throat line), etc.
Sol-gel method.Sol-gel method is a wet chemical method for preparation of materials.
Tungsten copper composite materials preparation and application progress [J].
Materials heat treatment technology, 2008, 37(10): 89-92 [4] Dae G K, Kang W L, Sung T O, Young D K.
Materials Letter, 2004, (58): 1199- 1203

Study of the Influence of External Environment to Arc Channel in Argon with Laminar Flow Boao Xu1,a, Bin Chen1,a,and Qiang Chen1,a 1 National Key Laboratory on Electromagnetic Effects and Electro-optical Engineering, PLA University of Science and Technology, Nanjing 210007, China axuboao@126.com Keywords: Free-burning arc, MHD equations, Deflect arc, Cross-flow, External magnetic field Abstract.
Among the source is the emissivity of the electrode surface, is the reactive of metal materials spill.
International Journal of Heat and Mass Transfer.vol. 44
Journal of Physics D: Applied Physics 25.11: 1600
Journal of thermophysics and heat transfer 12.4: 500-506

The test materials were melted by a 25kg vacuum medium frequency induction furnace.
[3] Wei Zhang, Jianhua Yao, Wei Peng, Chenhui Dong and Xiaodan Tang: Chinese Journal of Lasers, Vol. 35 (2008), p. 1830 (in Chinese)
[7] Liping Zhao, Jinfei Wang, Yonglin Ma and Baoping Xue: Journal of Inner Mongolia University of Science and Technology, Vol. 28 (2009), p. 32 (in Chinese)
[8] Longmei Wang: Journal of the Chinese Rare Earth Society, Vol. 22 (2004), p. 48 (in Chinese).

Journal of Shangxi University of Science & Technology, vol25 (2007), in Chinese [3] LENG Cai-feng, GUO Ling-hua, LIU Guo-dong, YANG Bao-hong.
International Conference on Advanced Engineering Materials and Technology (AEMT 2011), July 29-31, 2011 [6] Zhao Ji-bin, Wang Yi-ming: The Weight Factor Method Defining the Tolerances of the Links’ Length for Four-bar Linkage, edited by Journal of Beijing Institute of Graphic Communication Vol.15 No.4(2007), p.54-56 [7] Cai Jifei: Manual of Offset Press Operator, edited by Printing Industrial Publisher, Beijing (2006) [8] Zhao Ji-bin: Offset Press Construction, Operation and Maintenance, edited by Chemical Industrial Publisher, Beijing (2007) [9] Zhao Ji-bin, Tong Cheng-nan.
Journal of Beijing Institute of Graphic Communication [J], Vol.16 No.4, PP.34-36, Aug. 2007

An Efficient IT Energy-Saving Approach Based on Cloud Computing for Networked Green Manufacturing Lei REN a, Lin ZHANGb School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China a leo.renlei@gmail.com, bjohnlin9999@163.com Keywords: Networked manufacturing, Green manufacturing, Cloud computing, IT outsourcing.
Gu: Journal of Materials Processing Technology, Vol. 138 (2003) No.1, pp.600-604
Lisboa: Journal of Manufacturing Technology Management, Vol. 15 (2004) No.6, pp. 511-530
Mladen: Journal of Computing and Information Technology, Vol. 16 (2008) No.4, pp. 235-246

Experiment Materials and method Etradecyl trimethyl ammonium bromide, cetyl trimethyl ammonium bromide and salicylic acid (Analytical grade, Tianjin Kermel Chemical Reagent Co.
Acknowledgement This work was financially supported by the grants from Youth Science and Technology Innovation Foundation of Xi’an Shiyou University (2010QN007) and Scientific Research Program Funded by Shaanxi Provincial Education Department (11JK0560).
Gong, New Journal of Chemistry, 34, 325(2010)
Bruce, New Journal of Chemistry, 41, 275(1999)
Chemical Journal of Chinese Universities, 21: 647(2000)

In the ANSYS finite element model, solid65 element simulation of concrete materials is used.
Journal of Chongqing Jiaotong University ( Natural Science Edition ) , 2007, 26(5): 25－28
Journal of Vibration and Shock , 2007，26(6)：125－128
Journal of Civil Aviation University of China , 2009，27(1)：14－18

Microstructure and compound developed from the Ce-As-Fe at 1173K Sisi Zhua, Jinzhu Zhangb, Weiyu Yangc College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China a15185158272@163.com, bzjz-yjx@163.com, c404333078@qq.com Corresponding author E-mail address: zjz-yjx@163.com Key words: Cerium; Arsenic; Ce-As compound Abstract: In this study, a certain amount of Cerium and Arsenic were closed in the barrel-shaped cylinder machined by H08 steel, heated to 1173 K for 50 h, and the interaction among the cerium, arsenic and iron in the barrel-shaped cylinder was studied by X-ray diffraction, optical microscopy and electronic probe microscopy analysis.
Acknowledgment The authors gratefully acknowledge the financial support provided by National Natural Science Foundation of China (NO.50964002).
Chinese Journal of Spectroscopy Laboratory, 2002, 19(4): 485-487 [2] Liu Shouping and Sun Shanchang.
Journal of Alloys and Compounds. 1999, 287: 174–180 [10] Riccardo Ferro*, Gabriella Borzone, Nadia Parodi.
Journal of Alloys and Compounds, 2001, 321: 248–260 [11] Stanislav S.

School of advanced sciences- VIT University (India) a dswathi90@gmail.com, brvidya@vit.ac.in, cnarunainambiraj@vit.ac.in Keywords Kidney stones, qualitative analysis, biochemical analysis, X-ray diffraction.
Materials and Methods Five samples were procured from hospitals in Chennai, the stones were washed and dried after which they were mashed into a fine powder using pestle and mortar.
Journal clinical pathology.1971; 24:147-151
Journal clinical Pathology.1953; 6:114-117
Amer, Journal clinical pathology. 1957; 27:360-362