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The acoustic characteristics of liquid-conveying pipeline elbow structure The original pipeline right elbow structure as shown in Fig.1, the center radius of pipeline elbow is 125mm, the outside diameter is 140mm, and the pipeline elbow thickness is 8mm, the material of pipeline elbow is BFe10-1-1.
Acknowledgment Work was supported by the National Natural Science Foundation of China (Grant No. 10972030) References [1] Y.L.
Wang: Ship Science and Technology.
Fan: Journal of Zhejiang University.
Wang: Journal of vibration and shock.

Materials and experimental program 1.1 Materials and Heat Treatment Selected manufacturing turbines leaves, fasteners and other parts of the super-critical material KT5331AS0 (1Cr11Co3W3NiMoVNbNB) steel and 45 steel as a test material of contrast research ,the heat treatment were1080 ℃{TTP}8451 heating harden ,680 ℃{TTP}8451 Tempering and 840 ℃{TTP}8451 heating harden and 600 ℃{TTP}8451 Tempering, and the organizations are low-carbon lath Martensite and tempered Sorbite 1.2 Cutting test program It can choose cutting fluids or without cutting fluids when the milling used in the center machining of BV100.
It is because lots of alloy elements improve the antoxidation of material.
JOURNAL OF AERONAUTICAL MATERIALS, 2005，（4）：20-29
New Perspectives On The Cutting Mechanism Of Difficult-to-machine Materials [J].
JOURNAL OF ZHENGZHOU INSTITUTE OF LIGHT INDUSTRY(NATURAL SCIENCE EDITION), 2003，（18）：13-16

The similar material of C30 concrete pile is pure gypsum material.
The similar material of prestressed anchor is cable.
Table 1 Physical and mechanical parameters Materials Scale ρ /(kg·cm-3) c/kPa E/MPa φ/(°) Prototype 20 1800 36 60 32 Model 1 1800 1.881 3.229 32.50 Scale 20 1 19.140 18.581 0.98 Design of model test chamber.
Compacted earthen materials and embedded pile.
(In Chinese) [3] Guillermo Etse:Finite element analysis of failure response behavior of anchor bolts in concrete, Nuclear Engineering and design.(2008) [4] A.Serrano:Tensile resistance of rock anchor, Internation Journal of Rock Mechanics and Mining Sciences.(1999) [5] Bazant Z P: Journal of the structural division (2009) [6] J.Caims: Structures and Buildings. (1993)

Therefore, it has become research hotspot in the field of materials and mechanics[4,5].
Multidiscipline Modeling in Materials and Structures, 2009.5(2): 199-203
Analytical Method for Connecting Structure of Advanced Composite Materials [M].
Ceramic Matrix Composites: Materials, Modeling and Technology[M].
Mechanical comparison of new composite materials for aerospace applications[J].

Table 2 The value evaluation of each technique Technology Category Technology Value Technology Category Technology Value TA Basic Materials TA1 2.39 TC Preparation Technics TC1 2.58 TA2 6.75 TC2 8.12 TA3 8.14 TC3 4.11 TB Reinforcing Materials TB1 3.25 TC4 6.25 TB2 1.98 TC5 9.31 TB3 5.46 TD Blade Design TD1 8.22 TB4 6.15 TD2 8.15 TB5 7.35 TD3 7.83 TB6 8.73 TD4 7.51 2.4 The technology roadmap of blades in wind power As a flexible tool of technology management, technology roadmaps could be made in different forms to match different strategy targets[5].
Reinforcing material Now the most mature reinforcing material is glass fiber, but it is difficult to use on large blades because of higher density.
Wuhan: Huazhong University of Science and Technology, 2010:65-66
Journal of Scienology and Management Science & Technology, 2010 (01) : 17-22
Science Research, 2012 (4)

Analysis of Ultimate Loading Capacity of Inner Concave Cable-arch Structure with Different Arch Rise-span Ratio Youbao Jiang1, a, Guoyu Liao1, b 1 Changsha University of Science and Technology, Changsha, 410114, China ajiangybseu@163.com, b379257623@qq.com Keywords: Inner Concave Cable-arch, Arch Rise-span Ratio, ANSYS, Loading Performance Abstract.
Therefore, the structure should be designed into the overall failure mode, in order to improve the material utilization.
The structure should be designed into the overall failure mode, in order to save material
References [1] Lifeng Huang,Jian Feng,Jin Zhao,Jianguo Cai,Ping Sheng,Wei Zhen,Cui Chen,in:Journal of Building Structures(2010 )(In Chinese)
[2] Lifeng Huang,Jian Feng, Jianguo Cai,Ping Sheng, Wei Zhen,Qiang Chen,Ting Shen,in:Journal of Building Structures(2010)(In Chinese)

That is to say, the influence of hard magnetic material is a constant value.
The influence of soft magnetic material to the sensor is very complex.
Each atom current can be expressed as a magnetic dipole. soft magnetic material does not display its magnetic performance without external magnetic field, while a single atom current loop of soft magnetic materials can be equivalent to a magnetic dipole current loop with external magnetic field, thus, the inductive magnetic field can be seen the superposition of several magnetic dipole magnetic field.
Journal of Astronautics[J]. 2009,30(4):1314-1389 [2] LIU Ren-hao, XIA Jin-xiu, WANG Xue-ping.
Study on Attitude Measurement of Gun-Launched Cruise Projectile with Geomagnetic Field Journal of north university of china (natural science edition)[J]. 2009,30(6):630-633　 [3] Wang Yi-fan, OuYang Jun, Yang Xiao-fei, Chen Shi, Zhang Yue.

In the preparation of nano-HAP, there is very little attention given to the purifying step of the freshly precipitated materials.
Materials and Methods Materials Ca(NO3)2 ·4H2O, NH4H2PO4 and all the other reagents are of analytical grade and purchased from various suppliers.
The starting materials were Ca (NO3)2 ·4H2O and NH4H2PO4.
Wang: Journal of Crystal Growth Vol. 270 (2004), p.212 [5] N.C. van de Merbel: Journal of Chromatography A Vol. 856(1999), p. 57 [6] S.M.
Liu, et al: Key Engineering Materials Vols.309-311(2006), p. 577

Experimental The experimental materials were prepainted steel sheets for construction with the trademark S320GD+Z, produced by WISCO.
The chemical composition of experimental materials was listed in Table 1.The thickness of prepainted steel sheets was 1.0 mm and the Zinc quantity of both sides was 150g/m2.
The experimental materials were laid on shelves at an angle 15° from vertical.
Chinese Journal of Anhui Metallurgy, Vol 3 (2002), P.15
Chinese Journal of Sichuan construction Science Research, Vol 28, No.3 (2002), P.48.

With the development of economy and society in recent years, more and more fast-growing wood was planted and used to produce high additional value’s construction materials.
Fiber Reinforced Plastics (FRP) was a new composite materials which consisted of high performance fiber, polyester and epoxy resin.
Materials and Methods Materials. 10-year-old eucalyptus veneers came from planted forest in Guangxi Autonomous Region China.
[5] Zhang Yi-fan.Journal of forest industry A3(2001):9-12 [6] Gentile C, Svecova D, Rizkalla S.
Journal Of Composites for construction, Vol.6 A1(2002): 11-20