serial radiography

例句：

1. 1. The serial numbers are used to identify the parts of the machine.
   序列号用于识别机器的各个部分。
2. 2. The series of events led to a chain reaction that changed the course of history.
   一系列事件导致了历史进程的改变。
3. 3. The scientist conducted a series of experiments to test his hypothesis.
   科学家进行了一系列的实验来测试他的假设。