宽度
发表于 2025-3-30 09:09:00
Microstructure and Properties,ample, the basic components of steel are iron and carbon, although there are other components (elements) present. The components may be distributed throughout the material in a variety of ways and, even under equilibrium conditions, a material may be single- or multi-phase depending on the temperatu
ingrate
发表于 2025-3-30 16:05:07
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calamity
发表于 2025-3-30 20:08:43
Plastics and Polymers,uch as natural rubber, wood, cotton, wool and hardened oils, have been known for much longer and valued for the qualities conferred by their basic structure, but the first synthetic polymers were not produced until the 19th century. Synthetic polymers now dominate so many applications-not only as pl
fluffy
发表于 2025-3-30 21:41:01
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uncertain
发表于 2025-3-31 04:09:25
Semiconductors,they tend to increase with increasing valency. At first sight, this is surprising since increasing valency means an increasing number of loosely bound electrons in the outer shells of the atoms, and an increase in the number of electrons available might be expected to lead to an increase in electric
的是兄弟
发表于 2025-3-31 09:02:41
Semiconductor Processing,s of materials science. These have been important at every stage in the development of integrated circuit technology and in this chapter we discuss the principles and methods involved. Because the present technology is based dominantly on silicon we will confine our discussion mainly to this materia
EXCEL
发表于 2025-3-31 12:08:31
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分贝
发表于 2025-3-31 17:24:26
Dielectrics,tion as in the classic school experiment of rubbing a glass rod with dry silk. Virtually all the modern plastic materials are good dielectrics: the charging up of nylon fabric through friction with other clothing gives rise to crackling sparks and sometimes to tangible arcs and shocks when the garme