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Experimental Method Raw materials and analysis.
Modern agricultural science and technology.
New energy and new materials.
Solar journal, Vol. 30(2009), p.237-240.
Journal of dalian university of technology, Vol. 47 (2007), p.47- 49.

We select optical material which has high refractive index, this may reduce the thickness of the lens, at the same time simultaneously the radius increases, thus obtains the larger field of view.
Doublet objective is composed with the convex and negative lens, the convex one’s material is LAK11 and K9, the concave one’s material is ZF1.
Journal of Applied Optics. 2006,27(3):172-176.
Chinese Journal of Scientific Instrument, 2006.No6(in Chinese) [7] Wang S J, An Z Y, Wang J S.
Journal of Changchun University of Science and Technology. 2010.22(4):58~61(in Chinese) [8] Zhang S Z.

A total of three samples were made from both experimental materials.
A higher percentage of plastically deformed material occurred for X153CrMoV12 materials.
Theisen, Tools for processing materials, Ferrous Materials: Steel and Cast Iron (2008) 271-305
Journal of Manufacturing Processes, 81 (2022) 655-671
Findik, Latest progress on tribological properties of industrial materials, Materials & Design 57 (2014) 218-244

The limited function that autograft can restore encouraged the writers to invent bioartificial nerve guidance conduit that mostly uses chitosan-based materials.
HCl 1 M 40 ml Degradation test was administered to investigate bioactivity capability of the materials using simulated body fluid (SBF).
Tensile Test Tensile test was employed to determine the elongation of the materials when they were implanted in body.
Journal of Bioactive & Compatible Polymers
Japan: Nagasaki University. www.mdpi.com/journal/materials

Experimental details Raw materials.
Wang: Construction and Building Materials, Vol. 25 (2011), p.705
Chen, N Liu: Construction and Building Materials, Vol. 44 (2013), p.691
Pacheco-Torgal: Construction and Building Materials, Vol. 51 (2014), p.151
Wang: Construction and Building Materials, Vol. 56 (2014), p.113

Grain size and its distribution are important parameters which reflect the microstructure of metallic materials, and directly affect the mechanical properties and physical properties of materials, so it is an important parameter in production process control [2,3].
The operating frequency commonly used in industrial ultrasonic testing is in the range of 0.5-10MHz, in which the high frequency part of ultrasound is mainly used for fine-grained materials and high sensitivity detection, and the low frequency part is often used for faster decay and coarse-grained materials detection.
It could achieve directional emission and reception by Special equipment and can be used to detect the internal of materials effectively [4,5].
Wang, A Belyakov, Grain boundary assembles developed in an austenitic stainless steel during large strain warm working, Materials Characterization. 70.4 (2012) 14-20
Yang, Directional dependence of aluminum grain size measurement by laser-ultrasonic technique, Materials Characterization. 129 (2017) 114–120

Effect on Catalytic Activity and Characterization of content of V2O5-WO3 by Chemical Vapor Deposition Mei Yang 1,a, Ben Ou 1,b, LIjun Yan1,c College of Material Science and Engineering, Southwest Petroleum University, Chengdu, 610500, China ameiyangs0099@163.com, boubenbao@sina.com, c yanlijun100@126.com, Key-words: V2O5-WO3/TiO2,catalyst,content,CVD(chemical vapor deposition),the honeycomb cordierite.
Materials and methods Preparation of catalyst.
References [1] Runze Zhang ,Quan Xie, Fengling Yang:Journal of Catalysis Vol.23(2002),p.46-50,in Chinese. [2] Went,G.
[5] E.Tronconi,L.Lietti,P.Forzatti:Chemical Engineering Science Vol.51(1996) ,p.2965-2970 [6] Tongzai Yang , Shunzhong Luo , Yunshu Xu:Carbon ,2006 :17-22,in Chinese

The efficiency of the controlling scheme is demonstrated from the displacement and internal force of the main material under five different wind directions[1].
Additional Equivalent Damping Ratio of Viscoelastic Dampers Steel-lead viscoelastic damper dissipate energy in this way that when the webs of the damper occurs relative displacement,both steel-lead core and the viscoelastic material can dissipate energy with shear plastic deformation at the same time.
Steel parts are simulated by BEAM188 element, and the quality of gusset plate auxiliary and connections is considered by adjusting the density of the material.
Acknowledgements The research work was supported by National Natural Science Foundation of China under Grant No. 51308094, No. 51308095.
[2] ZHONG Wanli,WU Guanlun, Wang Wei,WU Yi,CHEN Hanghang.Wind-induced vibration reduction technology of high-voltage transmission tower based on polymer damper[J].Journal of Central South University(Science and Technology),2013,44(1):397-402

For example: material price, amount of material use, artificial efficiency, management cost of variable and fixed, production, sales.
(3) Control under material cost In the construction industry, the loss caused by material waste is more than that caused other influence factors, the factors to influence and to increase the difficult of the accurate control of material cost are price difference and quantity difference [5].
Working flow chart of the materials engineer is shown in Figure 2.
Materials engineer Monitor delivery and published Fig. 2 Material supply diagram Conclusion Quality cost management of construction enterprises is a process of continuous improvement, the factors affecting the establishment of the quality cost system are analyzed, and on this basis, the process of establishing the balance system of quality cost control has been analyzed, to a greater extent the profits of construction enterprises is maximized.
Beijing,China Building Industry Press,（2003）, p. 115-116 [2] Liu Weidong, should Jing: management review based on (2011) [3] Zhou Wei: supervision test and cost of construction (2008) [4] Shang Shanshan: Journal of Shenyang University of Technology (SOCIAL SCIENCE EDITION). (2012) [5] Luo Shi Zheng: The new products and new technology in China(2012)

Thanks to its great properties, magnesium alloy has been widely used even for structural components in the automobile, aerospace, and electronics industry to replace some existing materials [2],[3].
Experiment Materials and Experimental method.
Ebert: Magnesium properties application – potential, Materials Science and Engineering A302 (2001), p.37
Senda : Applications of magnesium-alloys for aerospace structure systems, Materials Science Forum, Vol. 350-351 (2000) p.341
Mabuchi: Press formability of a rolled AZ31 Mg alloy sheet with controlled texture, Materials Letters,Vol. 60 (2006),p.173.