The multipurpose writing plate is composed of a baseplate, a writing board and an arithmetic unit. The arithmetic unit is fixed to the baseplate.
多用书写板是由基板、书写板和运算器组成，运算器固定在基板上。
The multipurpose writing plate is composed of a baseplate, a writing board and an arithmetic unit. The arithmetic unit is fixed to the baseplate.
多用书写板是由基板、书写板和运算器组成，运算器固定在基板上。
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