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3D printer is a rapid prototyping technique, which based on digital model file and its working principle is similar to the ordinary printer. It is often used in education, industrial design and mold making and other fields.
Besides, with the development of the information technology, educational robot is also used in education field to arouse the interest of students and cultivate student's comprehensive practical ability. So arduino robot car, biped robot kit and some kits are becoming more and more important in educational practice.