Please draw the axis of symmetry of the following figure.
The second image is obtained by rotating the cross-grating interferometer an angle about its axis of symmetry.
The decline of brightness from its central peak along this axis of symmetry is different in the opposite directions.
The Palace Museum is 3800 metres long, the entire buildings according to the north and south in the middle of the central axis of symmetry layout, distinct, primary and secondary order.
Moment of inertia: turning around its axis of symmetry, object has the character keeping speed and the direction of the axis of rotation not changing.
And, of course, that only works if the solid has some axis of symmetry.
國文精選館
