首页>
外国专利>
material testing for the rapid detection of errors in thin of mass-produced articles, in particular piston rings, slide valves of rotary-piston engines, by means of gamma radiation of a radioactive isotopes.
material testing for the rapid detection of errors in thin of mass-produced articles, in particular piston rings, slide valves of rotary-piston engines, by means of gamma radiation of a radioactive isotopes.
