Also known as timing device
thumb|A typical kitchen timer
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Article · 中文
定時器是一種測量時間間隔的特殊類型時鐘。定時器發出提示的聲音代表時間間隔已到。 定時器有兩大類：硬體和軟體定時器。
Abstract from DBpedia / Wikipedia · CC BY-SA
Gallery (4)
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