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3点30分时时针和分针成什么角
更新时间: 2020-10-29 00:00:00  

3点30分,时针和分针成75度角。计算过程:因为分针一分钟转动:360÷60=6度,时针一分钟转动:30÷60=0.5度,所以,(6-0.5)×30-90=5.5×30-90=165-90=75度。

计时器上指示小时的指针,钟表等计时器表面上的针形零件有长针和短针之别,短针指示“时”,称“时针”。

关键词: 时针 什么

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