| 释义 |
天文钟tiānwénzhōng确定时刻的一种天文仪器,一般是每秒摆动一次的摆钟,准确度远比一般优良的时钟为高,通常放在真空的玻璃罩中,装在恒温的地下室里。{astronomical clock, astronomical instrument that determines time; clock with a pendulum that swings to and fro once every second with a degree of accuracy far higher than common good-quality clocks, usu. placed under a vacuum glass cover in a constant-temperature underground room} |