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1051年

1051年

1051年

1051年

1

We understand that Bi Sheng in 1051 , guartz Hill County grass , the Northern Song dynasty , the famous inventor .

据了解，毕升逝于 1051 年，是英山县草盘人，北宋著名发明家。

2

Edward the Confessor had designated William as his successor in 1051.

1051 年爱德华指定威廉为他的继承人

3

About 100 years later the innovations of Bi Sheng , pictured above, (990-1051 ) were described.

约 100 年后，毕升（990-1051 年）的发明见诸记载，如图。

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