During design and fabrication of offshore platform module, the shrink of wilding seam often causes interbedded crack on the main padeye plate and the column.
A new fabrication method for hollow microneedle array is proposed with three times exposures in deep X-ray lithography of synchrotron radiation and the development procedure.
In order to achieve the fabrication of noninvolute beveloid gears with crossed axes by using the existing machine tools, the tooth profile errors and axial errors should be studied.