例句與造句

1. He made various scientific observations in magnetism and astronomy and pendulum measurements of gravity, for which he shared the Copley Medal in 1827 and received the rank of commander.
2. To be useful, it was necessary to find the exact location ( latitude and longitude ) of the'station'where a gravity measurement was taken, so pendulum measurements became part of surveying.
3. It's difficult to find pendulum measurement in a sentence. 用pendulum measurement造句挺難的