英语词汇“chalcolithic period”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	chalcolithic period
释义	Chalcolithic period Chalcolithic period the copper and stone age, regarded as occurring in the period 5000 BC to 3500 BC.
随便看	ethylstibamine ethyl sulfate ethyl sulfhydrate ethyl sulfide ethylsulfuric acid ethylsulphuric ethylsulphuric acid ethylthioethane ethyltriphenylphosphonium acid acetate ethyltriphenylphosphonium bromide ethyltriphenylphosphonium iodide ethyl urethane ethyl vanillin ethyl vinyl acetate ethylvinyl ether ethymology ethyne ethynes ethynodiol ethynodiol diacetate ethynyl ethynylation ethynyl estradiol ethyol ethyoxyl

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Chalcolithic period