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Electronic materials.
With publication and circulation of a large number of teaching materials, the selection of teaching material is more and more extensive.
In order to coordinate the issue of teaching materials, most of the editors produce multimedia teaching courseware together with the teaching materials, but the software displays mainly book knowledge, that is, an electronic material.
[5] Keqiang Ren and Yunhao Li: Journal of Jianxi University of Science and Technology Vol. 27 (2006), p. 63-65.
[7] Zhiyan Jia and Jianjun Chen: Journal of NUC(Social Sciences) Vol. 21 (2010), p. 94-96.

Experimental methods Materials.
Journal of Colloid and Interface Science.
Journal of Colloid and Interface Science.
Journal of Hazardous Materials.
Journal of Colloid and Interface Science.

Introduction The basic theory of photovoltaic materials was found by a French scientist Henri Becquere in 1839.
CIS series photovoltaic materials are the most potential solar cell materials within the second generation photovoltaic materials.
In my opinion, Coreduction (spin-coating) is a promising new method for the synthesis of thin film materials.
11(1) (2011), p. 28-33 [19] Caballero R, Maffiotte C: Thin Solid Films 474(1) (2005), p.70-76 [20] DM Zhuang, G Zhang: Vacuum 41(2) (2004), p.1-7 [21] Li M, Chang F, Li C: Procedia Engineering 27 (2012), p.12-19 [22] Jeong C, Kim C W: Materials Letters 92 (2013), p.216-219 [23] JP Xiao, H Qing: Journal of southwest University for Nationalities 34(1) (2008), p.189 [24] FS Wang, GM Zhao: Acta Energiae Solaris Sinica 01 (1986), p.114 [25] Terasako T, Uno Y, Kariya T: Solar energy materials and solar cells 90(3) (2006): p.262 [26] Terasako T, Inoue S, Kariya T: Solar energy materials and solar cells 91(12) (2007), p.1152 [27] YH Li, AB Ma, KX Zhang: Materials Review 28(3) (2014), p.136-139 [28] Sun J, Batabyal S K, Tran P D: Journal of Alloys and Compounds, 2014
B557-B561 [34] Mitzi D B, Yuan M, Liu W: Advanced Materials 20(19) (2008), p.3657-3662 [35] Hahn J S, Park G, Lee J: Journal of Industrial and Engineering Chemistry, 2 (2014), p.51

Experiments Synthesis of materials.
Characters of materials.
Good degradability was shown only in those materials with high specific surface areas[11-14], non-crystalline materials[6, 18].
Paschall, Direct chemical bonding between bioactive glass-ceramics materials and bone, J.
Hench, Bioactive materials.

Experimental Procedure Materials used: Ordinary Portland Cement (43 Grade) was used throughout the investigation.
ARPN Journal of Engineering and Applied Science, VOL.3, NO.5, October 2008
[3]S.C.Pal, Abhijit Mukherjee, and S.R.Pathak:ACI Materials journal,V.99.No.6, Nov-Dec2002 [4]V.S.Ramachandran, “Concrete Admixtures Handbook” Institute for Research in Construction, National Research Council Canada, Ottawa, Ontario, Canada
[5]David N.Richardson, University of Missouri-Rolla, R199-035/R199-035B [6]S.Pavia and E.Condren, Journal of Materials in Civil Engineerig, April 2008. pp313-320 [7]Richardson, David N., University of Missouri-Rolla, (2006) Report 06-008, Jefferson City, USA
International Journal of Physical Sciences Vol.1 (3), pp. 112-120, November, 2006 [9]Wang Ling, Tian Pei, and Yao Yan, China Building Materials Academy, PRC [10]M.Shariq, J.Prasad and A.K.Ahuja, Asian Journal of Civil Engineering, Vol.9, No.1.pp61-74 2008.

Metallurgical and Materials Transactions A, Vol. 27A (1996) 2605
Journal of Materials Processing Technology 113 (2001), 692-698
Journal of Materials Processing Technology 133 1-2 (2003), 128-133
Journal of Materials Processing Technology 147 (2004), 28-37
Journal of Mat.

A metal cavity filled with absorber materials was used to obtain the unidirectional radiation patterns and its height was 30 millimeters.
For example, in [1], a novel sine-wave meander Archimedean spiral antenna is presented, and addition of sine-wave into Archimedean helix will prolong the electrical length of an antenna arm with a given radius of helix，which will enhance antenna miniaturization and maintain excellent radiation property of Archimedean spiral antenna．In [2], a hybrid backed-cavity with electromagnetic band-gap (EBG) structure and a perfect electronic conductor (PEC) is proposed for an Archimedean spiral antenna, and this cavity makes the spiral antenna work operate over the 10:1 bandwidth and without the loss introduced by absorbing materials that are used conventionally to broadband spirals.
Journal of microwaves,　2009, 25(2):53-57
Chinese Journal of Radio Science, 2005, 20(6):699-702
Journal of Shanghai University (Natural Science), 2008, 14(6):581-584.

Lately, there has been growing interest in finding sustainable, effective, and biodegradable materials, such as plant fibres, for composite reinforcement [1].
Materials and Methods 2.1 Fibre Extraction The Newbouldia L. plant was sourced from Enugu State in Nigeria.
Bala, Physical and mechanical properties of flax fibre and its composites: A Review, Journal of Material Sciences and Engineering. 10 (2022) 015
Baetens, Thermal and mechanical properties of flax fibers as potential composite reinforcement, Macromolecular Materials and Engineering. 286(6) (2001) 342-349
Ali, Tensile mechanical performance of natural/natural fiber reinforced hybrid bio-composite materials – A statistical approach, Journal of Industrial Textiles, 54 (2024) 1-31.

Introdction At present, the consumption of composite materials in the aerospace and automobile fields are increasing explosively [1-5].
[3] Ge Xinfeng, Li Ruihua, “Study of automatic fiber placement manipulator’s robotic kinematics manipulability based on volume element [J],” Research Journal of Applied Sciences, pp. 2221-2224, 2013
[4] Yin Zhifeng, Ge Xinfeng, “Depiction of the automated Fiber placementrobotic manipulator’s jacobian matrix by SOA [J],” Research Journal of Applied Sciences, pp.790-793, 2013
Xiao, “Research on the fiber placement trajectory planning of the non-developable complex curve surface [J],” Journal of Advanced Materials, Vol.42, No.4, pp. 56-61, 2010
C, “The study on the linking-up of free-form surface fiber placement track based on mesh creating [J],” Key Engineering Materials, pp. 682-687, 2009

Y (2002) ‘Wear Patterns and Mechanisms of Cutting Tools in High-Speed Face Milling’ Shandong – Journals of Materials Processing Technology 129, pp.222-226
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Y Steven (1996) ‘Three Dimensional Cutting Force Analysis in End Milling’ Atlanta – Journal of Mechanical Science, Vol.38, No.3, pp.259-269
W (2007) ‘Analytical Investigations Concerning the Wear Behaviors of Cutting Tools Used for Machining of Compacted Graphite & Grey Cast Iron’ International Journal of Refractory Metals & Hard Materials, Vol.51, pp.241-251
Seker Ulvi and Hasirci Hasan (2006) ‘Evaluation of Machinability of Austempered Ductile Irons in Terms of Cutting Forces And Surface Quality’ Turkey – Journal of Materials Processing Technology 173, pp.260-268