drum-membrane 绞盘头
drum membrane scar 鼓膜瘢痕
massage of drum membrane 鼓膜按摩疗法
When someone beats a drum, it is the flexing of the membrane on the drum, first deflecting then rebounding, which causes the sound waves that we can hear.
当某人敲了一下鼓，是鼓面的伸缩，先压缩，然后反弹，由此制造了我们能听到的声波。
A young man bends over the liver and peels off the membrane so he can take it home to make a traditional drum.
一位年轻人把鲸的肝脏弯了过来并把薄膜撕了下来，因而他可以把那薄膜带回家做一个传统的鼓。
For example, to model the sound of a drum, there would be a formula for how striking the drumhead injects energy into a two dimensional membrane.
举例来说，对于模拟鼓声，将有一个公式阐明敲击鼓面加添能量到二维的膜。
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