“zinc smelting technologyin ancient China”的概念、定义、翻译、参考文献-科学参考

单词	zinc smelting technologyin ancient China
释义	zinc smelting technologyin ancient China Encyclopedia 工学中国古代炼锌技术释 zinc smelting technologyin ancient China中国古代炼锌技术中国明代万历年间已发明并掌握炼锌技术，当时称锌为“倭铅”。15世纪中国开始用锌铸币。1872年在瑞典哥德堡港附近，打捞出一艘1745年由中国驶达欧洲的沉船，船上装有含锌98.99%的锌锭，说明中国明清时期金属锌的冶炼技术成熟，并可以产品出口。
随便看	shielded electron shielded factor shielded flame shielded inductor shielded metal arc welding shielded nucleus shielded nuclide shielded room shielded twisted pair shielded twisted pair, STP shield fern family shielding shielding and grounding for electronic equipment shielding anechoic chamber for full-scale aircraft shielding constant shielding current shielding effect shielding effect and penetration effect shielding effect at the capillary wall interface shielding-gate metal-oxide-semiconductor field effect transistor shielding in electromagnetic measurement shielding layer shielding length shielding materials shielding protection

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