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Currently passive rubber damper mainly depend on compression and shear deformation of the rubber material to achieve absorption and consumption of vibration energy, although the type of damper’s structure is simple, the cost is not high, there are some limitations on the damping characteristics, especially on high frequency[1,2,3].
With development of MR fluid damper material technology, it causes widespread concern to use MR fluid damper instead traditional rubber damper [4,5].
Fig.6 Spectrum comparison when different damper are used on engine Conclusion MR fluid damper with new material is used as the damping device of the engine, its damping effect is indeed superior to the traditional rubber damper.
(Shanghai Science and Technology Literature Publishing House 1995)
[5]Changrong Liao, Niao Yu, Honghui Zhang, in: Calculation method on damping force of automotive magnetorheological fluid shock absorber, edtied by volume. 19 of China Journal of Highway and Transport( 2006).

Effect of Different Packaging Films on Senescence of Kiwifruit Kai Gao1,a,#, Huanhuan Chen2,b,#, Haidong Liu3,c, Chongxiao Shao4,d, Hongyuan Ma2,e,Xinhong Huang2,f,Yanfang Pan2,g 1National Engineering and Technology Research Center of Agricultural Products Freshness Protection, Tianjin, 300384, China 2Key Laboratory of Food Nutrition & Safety (Tianjin University of Science & Technology), Ministry of Education, 300457, China 3Tianjin Gasin-Donghui Preservation Technologies Co., Ltd.
Introduction Kiwifruit(Actinidia deliciosa) is a kind of fruit which has thin skin and much juice ,so it is easy to become soften and dehydration[1].Films can be defined as a simple and effective modified atmosphere form by depending on the respiration rate of kiwifruit and permeability of film or storage structure surrounding products.[2] The objective of this study was to determine the effect of different packaging films during. storage life of kiwifruit Material and method Materials.Kiwifruits(Zhonghua)were harvested freshly from Zibo of Shandong province,China and were transferred to the laboratory immediately.
[3] S.Xu,X.Chen and D.Sun:Journal of Food Engineering 2001,50,(4),211-216

The hammer rod material is regarded as isotropic material, density uniformity and completely elastomer.
The maximum yield stress is 206.2MPa, less than yield strength and tensile strength of the rod material, but it becomes a dangerous section easily appearing crack because of the asymmetrical alternating stress function.
Chinese Air Science and Technology Literature, HTB830704
Chinese Journal of Engineering, 1990, 3(2):232~242

Tian, The geosynthetic materials friction characteristic test analysis of south-to-north water transfer project, Water Sciences and Engineering Technology, 2 (2012) 58-60 [5] F.
Zhi, The direct shear friction test research of geosynthetic material interface, Journal of China & Foreign Highway, 3 (2006) 255-258

Selection of isolator parameter according to the Guangdong Science and Technology Co., Ltd.
As for the difference of additional layer’s material of the upper structure in a multi-earthquake, the interlaminar shears of response spectrum analysis have a little difference.
AIJ Journal of Structural Construction Engineering, n620, 2007: 43~ 49
Applied Mechanics and Materials, 2013, （2）:2091－2095.

Machining material is W18Cr4V.
Acknowledgements This work was financially supported by the Natural Science Foundation of Heilongjiang Province of China (No.
References [1] Zhang Zhihang, Guo Libin, Cui Hai: Applied Mechanics and Materials, Vol. 138-189(2012), p. 1251-1257 [2] N．Balakrishnan, Bruno Scarpa: Journal of Multivariate Analysis.

In the last years intensive work has been performed toward the make of high alloyed materials and steels that have competitive properties and mechanical indices.
The high alloyed with Cr steels find a wide application as wear-resistance material that is used in the conditions of strike wearing out.
Rachev, High-nitrogen steels - Metallurgy under of pressure, Bulgarian science academy, Sofia (1995), in Russian. 4.
Rassizadehghani, International Journal of Cast Metals Research, Vol. 19 (2), p. 323-329 (2006) 5.

Damage control is of great relevance for materials with low workability such as intermetallic compounds.
Janschek, Forging Titaniumaluminide Parts, Materials Science Forum 638 (2010)
Journal of Manufacturing and Materials Processing, 2:1 (2018) 1
Janschek, Wrought TiAl Blades, Materials Today: Proceedings 2 (2015) 92-97
International Journal of Solids and Structures, 36:33 (1999) 5029-5055.

Experimental Part Analysis of input materials.
Results and Discussion Analysis of input materials.The particle distribution analysis results are summarized in Table 3.
A review: Surface pretreatment by phoshate conversion coatings, Advanced Material Science.
Phosphate conversion coatings on steel, Journal of Materials Science 12 (1977), 2235-2240
Lu, Phosphate chemical conversion coatings on metallic substrates for biomedical application: A review, Materials Science and Engineering C 47 (2015), 97-100.

A computer construction include more than 700 kinds of chemical raw materials, and more than half of them contain substances harmful to human body.
Although we can't entirely transfer from material economy out, but if quite share of the growth of the national economy transfer to immaterial economy, the contradiction between economic growth and environment will alleviate greatly.
Sulfuric acid corrosion off worthless material while leaving precious metals, and the cadmium, chromium, mercury, arsenic and waste acid liquid...quantity of those harmful substances discharged into the river, into the ground12.
Especially, the United States' new communications electronic equipment recycling regulations, put forward higher requirements to harmless design, harmless raw material supply and production technology of the electrical and electronic products.
References [1] Jirang Cui, Eric Forssberg, Journal of Hazardous Materials, Vol. 99(2003), p. 243-263 (In Chinese) [2] Qingzhong Bai, Hui Wang, Jie Han, etl, Techniques and equipment for environmental pollution control, Vol. 1(2001), p. 84-89 (In Chinese) [3] Mei Sun, Industrial & Science Tribune, Vol. 5(2009), p. 143-144(In Chinese) [4] Fine and Specialty Chemicals, Vol. 9(2009), p.14(In Chinese) [5] Xiaolong Hu, Xuezheng Wang, Social Scientist, Vol.142(2009), p. 73-76(In Chinese) [6] Fabin Lei, Recovery and Utilization of the Old and Waste Computer, Vol. 6(2004), p. 21-22(In Chinese) [7] Nongfu Shen, The peak of consumption caused the crisis of treating and waste computer rubbish pollution is serious, science and technology daily,2001/12/11, 009(In Chinese) [8] E-waste city - the Guiyu Phenomenon, China Environment News , 2010/06/06 (In Chinese) [9] Feng Zhang,  Science & Technology Ecnony Market, Vol. 9(2010), p. 70-71(In Chinese) [10] Yueqiong Su, The unfolding household