Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....返回引用工作表的工作表号 SHEETS 信息 : 返回引用中的工作表数 SIGN 数学和三角 : 返回数字的符号 SIN 数学和三角 :...