video head upper drum assembly 视频磁头上鼓组件
upper drum assembly 上磁鼓组件
head upper drum 磁头上鼓
upper lift drum 上部提升筒
upper throttle drum 上油门操纵钢索轮
As a member of the upper middle class, Drum doesn't think a move to the upper class would make that much of a difference in his lifestyle, but giving up computers and the Internet would.
作为中上阶级，他认为爬到上层阶级并不会使他的生活方式改变很多，而放弃电脑和网络则不然。
The bell has a specific name of the site, known as moving the upper and the lower part is called the drum bell mouth 16.20 for milling, bell onthe lips say, Name-minute dance.
钟的各部位都有着特定的名称，上部称为钲，下部谓之鼓，钟口两角为铣，钟唇曰于，钟顶名舞。
Large amounts of foams are subject to come into being in the upper part of a coking drum in the delayed coker, which seriously influences the processing capacity and product quality.
在延迟焦化装置上，焦炭塔上部易形成大量的泡沫，严重影响焦化装置处理能力和产品质量。
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