Crate Motors | Speedway Motors - 《中国科学》社
however 510 kW over 100000 RPM).This type of mill would be replicated all over the world throughout the coming century. The need for water-power meant that many mills popped up along rivers and waterways.Cotton mills were one of the first places to utilize child labor during the Industrial Revolution. The first jobs for children were in water powered cotton mills near the river. With the invention of the cotton spinning jenny and the steam engine,
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