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Material and Experiments H 300mm×300mm×10mm×15mm (height ×width× web thickness ×flange thickness)V-N micro-alloyed hot-rolled H-section steel with 500MPa yield strength was studied.
When rolling in the unrecrystallized zone, a large number of defects such as sub-grain boundaries, dislocations, and deformation bands are formed in the material.
So when the temperature is lower than a certain value, the instantaneous deformation distribution capacity is the dominant factor affecting the low temperature toughness of the material [11].
Acknowledgement This work is sponsored by Scientific Research and Technology Development Project of China National Petroleum Corporation (No.2019B-4014, 2018E-2101), National Science and Technology Major Project (No.2017ZX05009-003).
Journal of Anhui Vocational College of Metallurgy and Technology, 2017, 27(01):1-48 .

Compared with conventional push drilling, helical milling (orbital drilling) shows great advantages in aeronautical hard-machining materials hole making.
The application of hard-machining materials such as titanium alloy and CFRP makes it much more difficult to machine holes with conventional push drill.
Aero Tech Congress & Exhibition 2142: 55 [4] Ni WY (2007) Orbital drilling of aerospace materials.
Shandong: Shandong Science and Technology Press 79-82.
Harbin: Journal of Harbin Institute of Technology 6: 80-82.

For most plain concrete materials, the shape of the stress-COD curve are quite similar [17].
Petersson, Crack Growth and Development of Fracture Zones in Plain Concrete and Similar Materials, Ph.D.
Bazant, Fracture energy of heterogeneous materials and similitude, in SEMMLEM Int.
Wittmam, Elsevier Science Publishers (1986), p. 38 1-390
Modeer, A Fracture Mechanics Approach to the Failure Analysis of Concrete Materials, Ph.D.

To find the way of energy saving, low-carbon settlement and household consumption, improvements must be carried out in the following three aspects: (1) Focus on the residential lifestyle and building materials to find an energy-saving emission reduction breakthrough.
Briggs: Science, Vol. 319 (2008) No.5864, p.756
Kammen: Environmental Science & Technology, Vol. 45 (2011) No.9, p.4088
Shi: Chinese Journal of Population, Resources and Environment, Vol. 7 (2009) No.3, p.11
Vandenbergh: Proceedings of the National Academy of Sciences, Vol. 106 (2009) No.44, p.18452

China 2 School of Science, Shandong University of Technology, ZiBo, Shandong, 255049, P.
Presently, zinc oxide or impurity-doped (with B, Al, Ga and Zr) zinc oxide films have been actively studied as alternate materials to replace ITO because they are non-toxic, inexpensive and abundant [6].
Acknowledgements This work was supported by Shandong Province Natural Science Foundation (ZR2009GQ011).
Hosono, Science 300 (2003) , p. 1269 [5] M.
Yuan, Journal of Semiconductors 30 (2009) , p. 0230011 [10] H.

Kurtseva, Phase Diagrams of Silicate Systems, Issue the fourth, Triple oxide systems, Science, Leningrad, 1974
Schowengerdt, The Effects of Gravity on the Combustion Synthesis of B2O3-Al2O3-MgO Glass Ceramic Composites, in: 12th International Proceedings of the Experimental Methods for Microgravity Materials Science, ASM International, April 2, (2000)
Journal of the American Ceramic Society, 53 (2) (1970) 95-97
[20] Steelmaking Data Sourcebook, The Japan Society for the Promotion of Science, The 19th Committee on Steelmaking, Gordon and Breach Science Publishers, New York.

Section 3 shows the results of the teaching experience based on the improvements achieved in the Wikipedia contents, in terms of both written material and the generation of free-license complementary material.
This mark took into account both the originality and the quality of the text and the graphic materials that were used, as well as the reviewer’s comments and/or the bibliographical references used.
Chao, Wiki as a Teaching Tool, Interdisciplinary Journal of Knowledge and Learning Objects, Vol.(3) (2007) [2] A.
Bruckman, From Wikipedia to the Classroom: Exploring Online Publication and Learning, Proceedings of the 7th International Conference on Learning Sciences Bloomington, Indiana, (2006), 182
Konieczny, Wikis and Wikipedia as a Teaching Tool, International Journal of Instructional Technology and Distance Learning, Vol.(4) (2007)

Study the Equipment Based on Fast Flood Discharge Yuezeng Xu1, a, Fan Jiang1, b 1Zhejiang tongji vocational college of science and technology, Hangzhou 311231,zhejiang provience,China ayzxu9@126.com, bfanfan_0099@163.com Keywords: Flood Discharge; Quick Assembling and Disassembling, Mixed-flow Pump.
Selection of materials. 1) the shell of the draining pump is made by wilding using high-strength steel plate instead of casting using cast iron, and the type of steel material is Q345B, high-strength type 35GrMo can also be used as change from normal type 45 steel.
Material of the shell of the matched electric motor also changes to aluminum alloy.
Hu :Study on Transient Hydrodynamic performance of Mixed-Flow-Pump during Starting Period.: Journal of Zhejiang University（Engineering Science)

Research on Product Modeling Method for Supporting the Networked Manufacturing GuoHong Mao 1,a, Jian Pan 1,b, LanFen Lin2,c 1 Dept. of Computer Science and Software, ZheJiang University of Technology, Hangzhou, China 2Dept. of Computer Science, Zhejiang University, Hangzhou, China a mgh@zjut.edu.cn, b pj@zjut.edu.cn, c llf@zju.edu.cn Key word: Networked Manufacturing;Product Modeling;Agent Technology;Web Service Abstract.This paper introduces a new product modeling method: MAPMNM (Multi-Agent Based Product Modeling for Networked Manufacturing) based on analysing the requirements of product modeling.
Furthermore, a meta-model can continue to refine into smaller meta-models, for example, the part properties meta-model is composed of materials, heat treatment, density, specific heat, coefficient of ablation meta-models.
For example, the operation of reading material, density, specific heat, stiffness and other properties of various parts. (2) Enable Operator: It is a basic operation of extracting meta-model from the master model as the operation object, so that a certain character change occurs on meat-model. (3) Analysis Operator: It is a basic operation of making a comprehensive analysis on the meta-model extracted from the master model, based on the domain knowledge.
References [1] Yan LUO,XinJian ZHOU, Researchg on product modeling methods based on advanced manufacturing technology;Journal of East China Jiaotong University , Vol. 16 No.2(June, 1999),P.40-45 [2] QiuQiong Yan,ShuangXi Huang,YouLiang Zhang, Feature-based collaborative product modeling, Jiangsu Machine Building & Automation, No.3(2000),P.12-15 [3] ShuZi Yang,Bo Wu,ChunHua Wu, Networked Manufacturing and Enterprise Integration, China Mechanical Engineering, Vol. 11 No.1(2000),P.45-48 [4] XiaoLi Qiu,Hong Yi,XiYing Wu,WenCheng Tang, The STEP and XML technology in sharing of network design and manufacture information, Group Technology & Production Modernization; Vol. 18 No.3(2001),P.8-10 [5] YunLi Wang,Tianyuan Xiao, Research on the technology of multi-agent systems in manufacture area, Computer Integrated Manufacturing Systems, Vol. 7 No.10(2001) ,P.1-7 [6] Daozhi ZHAO, Miao FANG, The Key of Network Manufacturing: Integrating Material, Information, Capital and Knowledge Flows, www.ifm.eng.cam.ac.uk

With the decrease of the heat transmission and constant increase of the cutting temperature during PCB micro-drilling, the resin material may melt, which may lead the glass fiber chips firmly adhere to copper chips [2,3].
A Review on Drilling Printed Circuit Boards, Advanced Materials Research, 2011(188):441-449
Erkki, A summary of methods applied to tool condition monitoring in drilling, International Journal of Machine Tools & Manufacture,2002,42(9):997-1010
Ma, Design of needle-contact broken drill detection, University of Electronic Science and Technology of China, 2012.4
Xu, Signal and system (the second edition), Hefei: The Press of China Science &Technology University, 2006.3(168-175).