XLSX 到 XLS - 将您的 XLSX 转换为 XLS 的在线工具

XLSX 到 XLS转换器

Convert XLS To XLSX In Python - Pythondex

What is an XLSX File (and How Do I Open One)?

Programs to Open XLS and XLSX Files: Excel Equivalents

Excel: Understanding Number Formats

Display the File Name & File Path in Excel (PC & Mac)

What is a number format in Excel?