振動管 （1901） 15

1 min 25 secs

51 secs

6 mins 5 secs

4 mins

15 mins 33 secs

11 mins 13 secs

12 mins

9 mins 37 secs

5 mins 26 secs

5 mins 7 secs

6 mins 36 secs

5 mins 11 secs

7 mins 15 secs

4 mins 38 secs

7 mins 15 secs

6 mins 35 secs

6 mins 59 secs

5 mins 38 secs

7 mins 53 secs

10 mins 21 secs

6 mins 35 secs

5 mins 58 secs

1 min 14 secs

9 mins 1 sec

7 mins 47 secs

18 mins 8 secs

6 mins