英语词汇“hard lead”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 lead
释义	hard lead noun 1. : unrefined lead made hard by impurities especially of copper, antimony, and arsenic 2. : antimonial lead; specifically : an alloy containing about 5 percent antimony — compare grid metal
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