实验的序号用英文怎么说

在实验中，实验的序号通常被称为"experiment number"或"trial number"。这个术语来自英语，指的是给实验赋予的唯一标识符，用于将实验区分开来。

下面是一些例句：

"We recorded the results of each experiment in a spreadsheet, organized by experiment number." (我们将每个实验的结果记录在电子表格中，按照实验号组织。)
"Please make sure to include the experiment number on all data sheets and documents related to the study." (请确保在所有与研究有关的数据表和文件上都包含实验号。)
"The experiment number is used to keep track of which data belongs to which trial." (实验号用于跟踪哪些数据属于哪个实验。)