Rapidly solidified ribbons of Al90Nd7Ni3 metallic glasses were prepared by using melt spinning. Crystallization process of the totally amorphous ribbons was inv
The base vector between 2 poins and a high-precision geodetic height difference can be obtained by GPS. If the geodetic height of a point is known, the geodetic height of each observation point in a n
The effects of different contents of Sc addition on the microstructures and properties of the Al-4 %Cu alloy were studied by tensile properties measurement, opt
The wear mechanism of amorphous Ni-Fe-P coating was discussed. The wear resistance of the amor phous Ni-Fe-P coatings was tested on a Timken wear apparatus, and
The content of partially stabilized zirconia has remarkable influence on densification and mechanical properties of Al2 O3/PSZ(3Y) ceramic composites. When 15%P
<正>In order to develop a new high strength and high tolerance-resistance Al-Li alloy which can be used in aerospace industry, the effects of microalloying elem
The method of building 3D model was discussed at first. Aiming at the feature of mine vacant place,a method to build the 3D vacant place model based on multi TIN (triangular irregular network) was put