配重铁是人类掌握比较早的一种金属热加工工艺，已有约6000年的历史。
The counterweight iron is the humanity masters the quite early one metal hot-working craft, had the approximately 6000 history.
配重铁是人类掌握比较早的一种金属热加工工艺，已有约6000年的历史。
The counterweight iron is the humanity masters the quite early one metal hot-working craft, had the approximately 6000 history.
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