| 摘要 |
<p>Diaphragm placed in the path of the beam is reproduced by pulses on part of the workpiece by a system of reproduction. The irradiation of the layer to be treated (target) of the workpiece is controlled according to a programme. The impact zone and the size and shape of the pulses are regulated. The surface which has to be treated according to the number of adjustable transverse radial sections is divided as in a mosaic into a number of elementary surfaces, pref. rectangular or circular. The irradiation of the surface is carried out chronologically by means of gps, of current pulses the transverse section of which in the beam corresponds to the elementary surface characterising the gp. concerned.</p> |
