Four-dimensional classroom
一种教室、4D的技术,应用在教育用具、电操作的教具、光学等方向,能够解决效率低代签、不能考虑数据挖掘和数据统计工作、不能获得统计数据等问题,达到改进教学方式、提升教学品质的效果
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Embodiment 2
[0046] Embodiment 2: The difference from Embodiment 1 is that the shape of the cleaning cloth 14 is different. The cloth strips in Embodiment 1 are ordinary rectangular cloth strips, such as Picture 9 with Picture 10 As shown, the cross section of the cleaning cloth in Example 2 is arc-shaped, and the cleaning cloth is formed by connecting more than two arc-shaped cloth strips, and the shape of the arc-shaped cloth strip matches the shape of the curved glass on the surface of the signal lamp. In this way, the signal light can be better wiped during the wiping process, and follow the Picture 8 Wrap directly on the cleaning rod as shown. In addition, when wrapping the cleaning cloth on the first cleaning rod and the second cleaning rod, the cloth strip can be slightly moved below the cleaning rod, so that the curved cleaning cloth strip can be more in contact with the curved surface of the signal light. Tightly to get a better cleaning effect.
Embodiment 3
[0047] Embodiment 3: The difference from Embodiment 1 is that the outer edges of the two rollers have gears, and the inner side of the flange at the back edge of the signal lamp is surrounded by a rack that meshes with the gears. In this way, when the two rollers rotate, the rotation of the rotating arm can be better driven to prevent slipping.
Embodiment 4
[0048] Embodiment 4: Different from Embodiment 2, the outer edges of the two rollers have gears, and the inner side of the flange at the back edge of the signal lamp is surrounded by a rack that meshes with the gears. In this way, when the two rollers rotate, the rotation of the rotating arm can be better driven to prevent slipping.
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