英语词汇“fourfold block”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	fourfold block
释义	WordReference Random House Unabridged Dictionary of American English © 2024 four′fold block′, [Mach.] Mechanical Engineeringa block having four pulleys or sheaves. Cf. block (def. 11).
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