# 139 adの例文

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- It was constructed after
*139 AD* and extended for 37 miles between the Firth of Forth and the Firth of Clyde. - The mathematician, inventor, and astronomer Zhang Heng ( 78-
*139 AD* ) used geometrical formulas to solve mathematical problems. - There is also evidence that Zhang Heng ( 78 & ndash;
*139 AD* ) was the first to establish the grid reference system in Chinese cartography. - The Han Dynasty astronomer and inventor Zhang Heng ( 78-
*139 AD* ) not only catalogued some 2500 different stars, but also recognized more than 100 different constellations. - The record actually refers to July 21 of 140 AD but is astronomically calculated as a definite July 20 of
*139 AD* . This correlates the Egyptian calendar to the Julian calendar.