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This paper is about how to design a mould for an electrical switch box.
本文是针对一个电器开关盒的模具设计。
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The suction device makes the paper box stick to the mould firmly.
吸气装置，使纸盒牢固吸在模具上。
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The suction device makes the paper box stick to the mould firmly.
吸气装置，使纸盒牢固吸在模具上。
youdao