... 磁带和磁鼓 magnetic tape and magnetic drum 磁鼓标记 drum mark 磁鼓标示 drum mark ...
权威例句
1.
Further north of Qianmen is a neighborhood called Gulou that is home to the historic Drum and Bell Towers, which have helped Beijing mark the time of day for centuries.
CNN: April 10, 2012 -- Updated 1353 GMT (2153 HKT)