英语词汇“hard sphere”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	hard sphere
释义	hard sphere chiefly Physics noun (As a concept in theoretical models) an idealized sphere that is perfectly hard, inelastic, and impenetrable. Origin Early 19th century.
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hard sphere