| 术语 | drum |
| 释义 | drum 磁鼓；光电鼓；［鼓］ 1. A form of backing storage giving direct access and a storage capacity in excess of 2000,000 words for each drum. The drum is a cylinder with a magnetizable surface with several recording tracks. The drum is continuously rotated (up to 7000 rpm) while a group of read/write heads enter and access data with transfer rates as high as ten million bits per second. In computing, it is an early form of magnetic storage device. 一种后备存储器，能直接进行存取，存储容量超过200 000个字。它是一个表面可磁化 的圆筒，磁表面有若干个磁道。当一组读写头进入并以高达每秒10兆位的数据传输率存取 数据时，磁鼓将连续不停地旋转(每分钟转数高达7000)。在计算机技术中，这是早期使用 的磁存储器。 2. In the 3800 Printing Subsystem, a hollow cylinder around which the photo- conductor is wrapped. The drum continuously rotates during printing and carries the photoconductor part the various stations in the printing process. The drum also contains the photoconductor supply and takeup spools. 在IBM的3800印刷子系统中，一种镀有光电导体的中空圆筒。印刷时鼓连续旋转，带着 光电导体通过不同的位置。鼓还包括光电导体电源和提升卷轴。 |
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