September 8, 2019
Description
為了方便學生判斷otto機器人四肢轉動的角度，特別把量角器刻劃在機器人的關節處
提供學生觀察與判斷
In order to facilitate the student to judge the angle of rotation of the otto robot's limbs, the protractor is especially marked at the joint of the robot.
Provide students with observation and judgment
License:
Creative Commons - Attribution
mermaidz86
