| 摘要 |
The proposed multiannual calendar contains a plate with the calendar information. At the plate, a shaft with two pointers is installed. Between the pointers, washers are installed that are made of materials with different friction coefficients. When one of the pointers rotates through a certain angle, the upper pointer would turn through the same angle. At the shaft, a spring is installed that is designed for adjusting friction force between the pointers and the washers.
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