Metal smelters were built near richer mines.

矿藏丰富的矿区附近建立了金属熔炼厂。

On his way, he points out several rudimentary smelters.

在路上，他指出几个初级冶炼厂。

Hence the rise of "foundries", the smelters of the information age.

因此晶圆代工厂的增加是信息时代的熔炉。

Have you identified all smelters used within the supply chain?

贵司有没有确认使用在供应链的所有冶炼厂？

Production efficiency of aluminum smelters is another key problem.

炼铝厂的生产效率是另一关键问题。