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Introduction Rapid prototyping manufacturing technology (RPM) appears with the development of CAD/CAM, computer numerical control technology, laser technology, material science and engineering technology, together with information technology, virtual with information technology, it has become the implementation of product design technology and ideal tool for an unprecedented process of technology integration and innovation[1,2].
In the manufacturing sector, various parts of the traditional production methods are forming method (Forming) and material removal process (Material Removing) the two categories[3].But in the late 1980s, it was suggested the use of the STL file format CAD data 3D solid models (layered cut profile),Obtain a two-dimensional data model sub levels.
Thus a new parts production methods-Material Increase Manufacturing appeared.
The process is: First by the 3D CAD software design needed parts or entity computer 3D surface model; Then according to the technological requirements of the layered, according to a certain thickness of the original 3D electronic model into 2D plane information (section), this is the process of discrete; Hierarchical data for further processing, after converted into machining parameters, generate NC code[4,5];Finally received by rapid prototyping machine code instructions, produce a series of aspects, and automatically put them straight up, get a three-dimensional physical entity.The process is as follows: Fig.1 The principle diagram of RPM Selective laser sintering (SLS) forming principle At present, there are many ways to the realization of the rapid prototyping technology and in accordance with the form and different kinds of materials used, the technology is relatively mature and widely used mainly has five types[6].
Journal of Mechanics 2010,4(4):79-86

These finding may present a new feasible way for exploring modified LaFeO3-based sensing materials.
Acknowledgements The financial support through National Natural Science Fund Projects (51062017) is gratefully acknowledged.
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Xin: Preparation and gas-sensing properties of SnO2 materials (M.D., YanShan University, China 2010), p43.
Zhang: Materials Letters, Vol. 7 (2008), No.1, p.4304.

Materials and Methods Sites Description and Sampling.
Recognizable plant litters, coarse root materials and the stone were removed.
Acknowledgements This work was financially supported by Natural Science Foundation of China(40803023) and sciences knowledge innovation item of Chinese Academy of Science(KZCX2-YW-223).
Soil Nutrient Contents in Yellow River Delta Wetlands with Different Plant Communities, Journal of Agro–Environment Science 28(10), 2092-2097 (in Chinese)
Soil Science 38, 29– 37.

Rawls, Coal-fired power materials, Advanced Materials and Processes, 8 (2008) 47-49
Lu, Plastic flow behaviour in an alumina-forming austenitic stainless steel at elevated temperatures, Materials Science and Engineering: A, 594 (2014) 246-252
Suh, Precipitation sequence and its effect on age hardening of alumina-forming austenitic stainless steel, Materials Science and Engineering: A, 645 (2015) 72-81
Baker, Precipitation kinetics during aging of an alumina-forming austenitic stainless steel, Materials Science and Engineering: A, 667 (2016) 147-155
Pint, Protection of zirconium by alumina- and chromia-forming iron alloys under high-temperature steam exposure, Journal of Nuclear Materials, 438 (2013) 64-71

The composite steel plate shear wall, which was covered with concrete wall on the one side or both the two sides of the steel plate and the two different materials were connected by shear bolts or tie bars, was invented in the late 1970s.
Acknowledgements The authors are grateful for the financial support from the National Natural Science Foundation of China (50978005) and the Key Project of Science and Technology of Beijing (D09050600370000).
Journal of Structural Engineering, Vol.130(2)(2004), p.271-284 [4] Xilin Lv, Chunjie Gan and Wei Wang.
Journal of Fuzhou University (Natural Sciences Edtion), Vol.29(6)( 2001), p.24-34. ( in Chinese ) [7] Linhai Han.
Journal of Southeast University (Natural Science Edition), Vol.39(6)( 2009), p.1187-1192. ( in Chinese )

The speed at which it moves is most important because it relates the amount of adsorbent to the amount of material processed.
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Pant: Chemical Engineering Journal, vol. 98, (2004), p.165 - 173 [ 8 ] W.
Gupta: Department of Chemical Engineering, Brila Insitute of Technology and Science, Pilani, India

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According to sediment particle size scaleto choose model sand, thus obtained model graded material for model test[5-7].
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Chen 2, b , X Yang 3, c 1 School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471039, P.R.
China; 2 School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, P.R.
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Experiments Experimental Materials.
(1) The raw materials are put into the crucible.
(2) After adding the raw materials, we begin to vacuumize.
(3) We turn up the power gradually in the heating process until the raw materials melt totally
Easterling: Materials Science and Technology Vol. 11 (1989), p. 1057-1067