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並前往https://books.google.com.tw/books?id=SkUjAAAAMAAJ&pg=RA11-PA6&lpg=RA11-PA6&dq=2000hz+note&source=bl&ots=ZZOl-KVOWV&sig=ACfU3U3uv8RS2BY-jYrMklJRshg3FUlLJA&hl=zh-TW&sa=X&ved=2ahUKEwjozczbqtuBAxXTU6QEHYtNCaAQ6AF6BQjPAhAD

NASA Technical Note - 第 6 頁 - Google 圖書結果

... 2000 Hz X - axis and Y - axis 10 to 20 Hz 20 to 100 Hz 100 to 120 Hz 120 to 2000 Hz 12 dB / octave 2 0.01 g / Hz 24 dB / octave 2 0.45 g / Hz -24 dB ...

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