Bore hole drilling machine (DDW-600) DDW-600 drilling rig is the integral steel-tracked chassis model with powerful mobile capability; advanced negative feedback 1  ... DW/TXS Construction Equipment (Beijing) Co., ...
Levitation. Maglev trains have no contacts with the rails while they move forward. They are levitated on the guide-way with the help of magnetic forces. Levitation is the process by which an object is suspended against gravity in a stable position without any physical contact.
Magnetrain is the name for a maglev train system using a permanent magnet levitation system. It was first conceived by the American inventor, Colonel (ret.) Roy D. Vinson, in 1972. At that time, the idea of high-speed rail transport using magnetic levitation was in the air.agnetrain is the name for a maglev train system using a permanent magnet levitation system. It was first conceived by the American inventor, Colonel (ret.) Roy D. Vinson, in 1972. At that time, the idea of high-speed rail transport using magnetic levitation was in the air.