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Objective Research element composition of producing power in foundry work and quarry work.
调查研究某铸造作业和采石作业生产性粉尘成分的元素含量。
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目前对炼钢连铸生产作业计划的研究普遍只考虑满包转运阶段。
The spread of purpose-built manufactories like Quarry Bank Mill separated economic power and population, increasingly so as the West got richer.
ECONOMIST: A game of catch-up
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