This series of machine adopts overseas advanced technology, entire digital  enlarges, gathering, the closed-loop control, lead  the demonstration is stable, the precision is high, easy to operate. The main engine adopts the servo electrical machinery and the servo velocity modulation system, the precision speed reducer, the high accuracy guide screw , which has advantages such as the transmission to be steady, the noise is low, the speed precision is high, governor deflectionis wide,  service is long life and so on; The big liquid crystal and the microcomputer real time display, may demonstrate that the experimental load, the peak value, the displacement, the speed, the experimental condition, the curve and so on;