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人类的技术发明史告诉我们,任何一项成功的发明都不是一蹴而就,一成功就达到尽善尽美的。瓦特自1769年取得第一项关于制造蒸汽机的专利后,仍不断研究与改进。直到1781-1784年制成双作用蒸汽机,才算基本完成了蒸汽机的发明。瓦特之后,蒸汽机又经过多次较大的改进,历时100多年,才使其日臻完善。 蒸汽机的改进,基本上是在不断发展的热力学理论的指导下,沿着提高蒸汽压强、多级分段膨胀和增加转速的方向进行
The history of the human invention of technology tells us that any successful invention is not achieved overnight, and it will be perfect upon its success. Watt continued to study and improve after obtaining the first patent on the steam engine since 1769. Until 1781-1784 made double-acting steam engine, can basically considered the invention of the steam engine. After Watt, the steam engine has undergone several major improvements which took more than 100 years to improve it. Steam engine improvements are basically guided by the evolving thermodynamic theory along the direction of increasing steam pressure, multistage expansion and increasing rotational speed