A two-dimensional vertical mathematical model has been developed tostudy the flow structure over a trench and the bed le......

Solidification simulation of manufacturing shaped casting which plays an important role in asSuring the soundness and qu......

In this paper, a concept of surface nanocrystallization (SNC) of metallic materials is introduced.Three types of SNC pro......

Intel下一代CPU采用Achitecture-64(IA-64)64位结构,定于1999年初或1998底出台。IA-64是一种全新结构,既不是Intel 32位X86的64位......

德龄是一位慈禧御赐的“郡主”。但民初以降,德龄以“公主”身份为人所识。郡主置换成公主,此非无意之作,而是有心之为。德龄通过......