英语词汇“rock dust”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	rock dust
释义	WordReference Random House Unabridged Dictionary of American English © 2024 rock′ dust′, Mininga crushed limestone sprayed on surfaces in mines to make coal dust incombustible in case of a gas explosion. 1930–35
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