Pride and Prejudice
Volume 3 (p233~367)
McDougal Littell Science
Wave, Sound, and Light (p45~57)
2.2 Frequency determines pitch
2.3 Intensity determines loudness
1/21~2/3
Pride and Prejudice
Volume 3 (p233~367)
McDougal Littell Science
Wave, Sound, and Light (p45~57)
2.2 Frequency determines pitch
2.3 Intensity determines loudness
1/21~2/3
[3기]SQR 3기 #18
12-4 <ICR> Mouse Tales
[3기]4기 환영합니다
[3기]SS반 - 일곱번째 이야기
[3기]SQR 3기 #17