发布时间:2025-02-05 20:52:29
圆柱底面其实就是一个圆,假设其底面周长是C,底面半径是r
那么圆柱底面周长C=2*π*r,则,底面半径r=C÷2÷π
马上2020年了想买华为荣耀magic2买不到说过时了是真的过时了吗这款手机
2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29 2025-02-05 20:52:29朋友送了一个在美国纽约购买的飞利浦剃须刀hq4609我们充不上电充电指示灯也不亮 好像是手动调节电压
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