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| QB/T 2258-1996 Mechanical Diabolo Timer (English Version) |
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Detail of QB/T 2258-1996
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Introduction of QB/T 2258-1996
本标准规定了日常生活用机械式响铃定时器(以下简称“定时器”)的要求、试验方法、枪验规则及其标志、标签和包装。
本标准适用于以发条为动力源，以铃声作预定时段结束信号的日常生活用机械式定时器。
Contents of QB/T 2258-1996