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It has been found that the devices with low-k dielectric materials usually have better RC value to increase speed and to reduce interline crosstalk noise.
Analysis of the influence of environmental parameters is also an important branch in the field of barrier materials research.
The properties of materials are strongly influenced by the presence of defects or imperfections.
Positron Methods for the Study of Defects in Bulk Materials.
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Furthermore, the difference in materials properties between brazing alloy and diamond could create residual stress after brazing process.
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Acknowledgements This work was supported by the Science and Technology Support Program of Northeastern University at Qinhuangdao Branch（XNK201305）, the Natural Science Foundation of Hebei (E2013501096) and the Natural Science Foundation of Liaoning (20112063).
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The proper reason for this phenomenon is a wide variety of equipment and materials
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Mutation insures against the permanent loss of genetic material.
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Optimizing Results and Conclusion The thesis takes self-balacing torsion bar of 150 ton converter as optimizing target, the material of the torsion bar is high-quality alloy spring steel,which was handled by hardening, shot peening and pre-twist, ,， .
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Conclusions The bigger the finish-rolling reduction the stronger the Fine-Grain Strengthening, as well as the material strength.
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Figure 1 Bernoulli-Euler Beam node Figure 2 Cantilever beam first rank characteristic frequency and vibration mode The material of the beam is steel, the modulus of elasticity is , the density is ,the length is ,and the width and height of the cross section is ,.
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