A ball bearing linear stage in high vacuum is presented. Comparing with other vacuum compatible bearing this kind of stage shows simpler design, high stiffness and lower cost which is applicable in ...

In order to solve the existing problems in the design of the triangular track's load-bearing wheels, a finite element analysis and topology optimization method based on the analysis of typical working ...

Weather Underground provides information about tropical storms and hurricanes for locations worldwide. Use hurricane tracking maps, 5-day forecasts, computer models and satellite imagery to track ...