“file protection ring”的概念、定义、翻译、参考文献-科学参考

单词	file protection ring
释义	file protection ring [`fīl prǝ´tek·shǝn ´riŋ] ^{COMPUTER SCIENCE} A ring that can be attached to, or detached from, the hub of a reel of magnetic tape, used to identify the reel's status and, in some computer systems, to prevent writing upon the tape when the ring is attached or detached.
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