adjustable-span recorder

例句：

1. 1. The adjustable span recorder is a useful tool for measuring distances.
   可调跨度记录仪是测量距离的一个有用的工具。
2. 2. The adjustable span recorder can be used to track the progress of an athlete during a race.
   可调跨度记录仪可以用来追踪运动员在比赛中的进步。
3. 3. The adjustable span recorder was designed to provide accurate measurements in different environments.
   可调跨度记录仪被设计成在不同环境中提供准确的测量。