boiler drum head 锅炉鼓筒端板
drum-head 鼓轮盖
head drum 磁鼓 ; [计] 磁头鼓
floating head magnetic drum 浮动头磁鼓
fixed head magnetic drum 固定头磁鼓
video head upper drum assembly 视频磁头上鼓组件
head drum pedestal 磁头鼓座架
N the part of a drum that is actually struck with a stick or the hand 鼓面 [music]
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