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最佳答案：1.Simple harmonics signal is simplest and the most important cyclicalsignal.Wilf
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最佳答案：设半径r=5时 角频率为ω1,周期为T1；半径r=3时 角频率为ω2,周期为T2.角加速度 an=ω1^2*r1=5ω1^2an=ω2^2*r2=3ω1^2ω1
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最佳答案：Digital circuit design using a realization of,hours seconds.The timing device fi
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最佳答案：According to the engineer's evaluation, we need to design a suitable arc button