“ancient cutting technology”的概念、定义、翻译、参考文献-科学参考

单词	ancient cutting technology
释义	ancient cutting technology Encyclopedia 工学﹝古代机械制造技术﹞释 ancient cutting technology古代切削加工技术切削加工的历史可追溯到原始人创造石劈、骨钻等劳动工具的旧石器时期。
随便看	death from lightning death inducing signaling complex death-inducing signaling complex death instinct death intensity deathnium Death of an Outstanding Actor Death of A Salesman Death of General Yang Ye Death of Marat Death of Qiubai death of scalding death penalty death penalty policy death phase death process death rate death ratio of transportation accident death-ray death receptor death registration death sentence with a reprieve Deaths of Five Kings Death Valley Death Valley National Park

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