By combining with full disk suction seed used by suction blank and guiding target seed charge used by elasticity float guiding grid,solved the problems that the rate of seeding was little,the seeds was uniform distribution on seedling field and the dropping seed position was accurate,which was created a qualification for precision taking paddy shoot of seedling planting machine.

A method of hand-eye camera calibration based on projective calibration target;

Research on ZnO∶Al(ZAO) thin films sputtered by twin targets;

In this paper, ZnO:Al(ZAO) film is prepared by using the twin targets with DC-magnetron sputtering, Parameters of ZAO films, such as resistivity, electron mobility, transmittance, reflectance etc.