Physics, 24.11.2021 14:00 edramirez1914
Một vật dao động với tần số riêng f0=12Hz dùng một ngoại lực cưỡng bức có cường độ không đổi tác động vào vật
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Một vật dao động với tần số riêng f0=12Hz dùng một ngoại lực cưỡng bức có cường độ không đổi tác độn...
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