Big Ben: Making sure the Great Clock strikes on time
697 هزار بار بازدید -
16 سال پیش
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How is Big Ben and
How is Big Ben and the Great Clock kept on time? This short video explains how this is done.
Visit http://www.parliament.uk/bigben for more information about Big Ben.
Visit http://www.parliament.uk/bigben for more information about Big Ben.
16 سال پیش
در تاریخ 1387/11/15 منتشر شده
است.
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