« solarized gas turbine was based on a helicopter engine | Main | Metallization is the coating of a material with a fine mist of vaporized metal »
October 23, 2007
500x fresnal lens
Posted by Sun at October 23, 2007 01:29 AM
« solarized gas turbine was based on a helicopter engine | Main | Metallization is the coating of a material with a fine mist of vaporized metal »
Posted by Sun at October 23, 2007 01:29 AM