Inseok Kang

6 Hz 脳波: 最高の学習体験

3 Hz, 6 Hz, 9 Hz, 12 Hz アルファ脳波: 勉強と集中のための100%脳活性化,

6 Hz 脳波: 最高の学習体験
  • 6 Hz 脳波: 最高の学習体験

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