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المحرك البخاري
The machine that pumped deep mines and then, with Watt's improvements, drove rotary machines in factories; by 1800 perhaps 2,000 were at work in Britain.
steam power
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جسم
The machine that pumped deep mines and then, with Watt's improvements, drove rotary machines in factories; by 1800 perhaps 2,000 were at work in Britain.
لا مقالات مرتبطة بعد.