In order to develop AlN composites suitable for high average power electronic tube,A1N-W materials were prepared by spark plasma sintering.The effects of manufa
A set of water powered excavation test system was developed for the comprehensive performance testing and evaluation of water powered percussive rock drill indo
The thermal diffusion coefficient,heat capacity,thermal conductivity,and thermal expansion coefficient of Cu76.12Al23.88 alloy before and after cryogenic treatm
The electromagnetic properties of Ba2Co1.8Cu0.2Fe12O22 (Co2Y) and Ba3Co2Fe23.4Zn0.6O41 (Co2Z) were studied by measuring microwave scattering parameters.In the t
In order to realize information construction on settlement of pile-group foundation of Sutong Bridge,the monitoring instruments of high-precision micro-pressure
Sparse representation has recently been proved to be a powerful tool in image processing and object recognition.This paper proposes a novel small target detecti
A new approach to extraction of affine invariant features of contour image and matching strategy is proposed for shape recognition.Firstly,the centroid distance