digital synchronometer

例句：

1. 1.The digital synchronometer was used to measure the time difference between two cities.
   数字同步器被用来测量两个城市之间的时间差。
2. 2.The digital synchronometer was used in the construction of the new bridge.
   数字同步器在新桥的建造中使用了。
3. 3.The digital synchronometer was used to ensure that the clocks were accurate.
   数字同步器被用来确保钟表的准确性。