CSV是一种非常简单的格式，并且没有工作表的概念。
所以，不，不可能直接。
我唯一可以建议的是发送多个csv文件到客户端，可能是一个.zip文件，并让客户端unizp它，并一次导入一个表格到Excel。

CSV is a very simple format, and does not have the concept of a "sheet". So, no, it's not possible directly. The only thing that I can suggest is to send multiple csv files to the client, perhaps as a .zip file, and have the client unizp it and import one sheet at a time into Excel.

如果您需要在浏览器中直接打开，您需要使用xls文件。

If you need it to open directly in the browser, you'll need to go with an xls file.