In ancient China, the first Taoist smelting technology is an indisputable fact.

在古老的中国，道家首创冶炼技术是一个不争的事实。

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The production status of rail steel and smelting technology of heavy-rail steel in China are summarized.

本文对我国钢轨钢的生产情况及重轨钢的冶炼技术做了综合论述。

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The smelting technology of H08A welding rod steel is analyzed, some measures against the problems existing proposed.

分析了宣钢炼铁厂H 08 A的冶炼工艺，对其存在的问题提出了改进措施。

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Alcoa is the world leader in the production and management of primary aluminum, fabricated aluminum, and alumina combined, through its active and growing participation in all major aspects of the industry: technology, mining, refining, smelting, fabricating, and recycling.

FORBES: Alcoa Can't Wait But You Should Before You Buy