| 摘要 |
PROBLEM TO BE SOLVED: To save the user's trouble of operation. SOLUTION: A guide plane is displayed on a display screen to enable a user to grasp the sense of distance on a 3D display. An image showing the flowing direction of fluid in a pipe is moved and displayed on the display screen. On the display screen, axes which can be branched, moved, and rotated are displayed and parts are fitted in contact with each other along the axes.
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