In 13th century India, they knew how to isolate metallic zinc.

在13世纪的印度，我们知道了如何提取金属锌。

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How do copper and zinc differ in their reaction to hydrochloric acid?

我们将铜和锌摆在两个不同的玻璃实验瓶里。

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From the laying style of the gas electrode point of view, the method on how to improve the zinc-air batteries discharge performance was researched.

从改变空气电极的摆放方式的角度研究了改善锌空气电池放电性能的方法。

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In 13th century India, they knew how to isolate metallic zinc.

在13世纪的印度，我们知道了如何提取金属锌。

麻省理工公开课 - 固态化学导论课程节选

China represents 42% of global demand for the four main base metals: copper, zinc, nickel and aluminum, so its decisions regarding how to direct its state-run economy are paramount to the outlook for these commodities, she said.

FORBES: PDAC2012: China's Economy Should See 'Soft-Landing'; Supportive For Base Metals -- Scotiabank