波特兰水泥的发明史难以说清楚,一般认为是一个英国的建筑工J·阿斯普丁(J·AsPdin)于182、年10月获得了这项专利。
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These account for 10% of the total, including Faraday's electric motor (1821), waterproof material (1823), Aspdin's cement (1824), George Stephenson's passenger railway (1825) and the lawnmower by Edwin Beard Budding (1827).
BBC: Sir James Dyson
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