The paper introduces the experiment and research courses of motor chain steel.

介绍了摩托车链条钢的试验室试验研究过程。

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The effects of tempering temperature on properties of quenched link-chain steel were studied.

研究了回火温度对钢淬火后性能的影响。

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Petrochemical factory is one of the important taches in the circular economy chain centered about the steel industry.

在以钢铁工业为核心的循环经济链中，石化厂是重要的环节之一。

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The Nucor system was forged by Kenneth Iverson (1925--2002), who transformed a failing nuclear instruments company into a hugely successful chain of steel minimills.

FORBES: U.S. Bosses

The environmental result is that the value chain sucks ever more raw materials through as fast as possible, swallowing up huge volumes of timber, steel, plastic and energy in the process.

FORBES: Sustainable Consumption Rising on the Business Agenda