… Machine-tools for working any material by removal of … beam, ionic-beam or plasma arc processes; water-jet cutting machines. …
Explanatory notes
… a very small surface with electrons emitted by a cathode, accelerated by an intense electrical field, and focussed by … The beam of these machine‑tools works by continuous action, not by impulses as in the case of the laser beam. … stone, glass, aluminium, stainless steel, etc.). PARTS AND ACCESSORIES Subject to the general provisions regarding the …