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单词 second-pendulum
释义

> as lemmas

second-pendulum
second-pendulum n. = seconds pendulum n.
ΚΠ
1765 P. Murdoch in Philos. Trans. 1764 (Royal Soc.) 54 31 A second-pendulum at the equator would be 39·154 inches long.
extracted from secondn.1
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as lemmas
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更新时间:2026/5/29 22:37:45