decade counter

例句：

1. 1. The decade counter is used to count the number of decades in a given time period.
   十年计数器用于计算给定时间段内的十年数。
2. 2. The decade counter was invented by a mathematician who wanted to simplify the process of counting decades.
   十年计数器是由一位数学家发明的，他想简化计数十年的过程。
3. 3. The decade counter is often used in scientific and historical research to help researchers accurately measure the passage of time.
   十年计数器在科学和历史研究中常用来帮助研究人员准确地测量时间的流逝。