Document Manager server call stack DocumentManager服务器调用堆栈
In a document copying machine or duplicator, a device that separates by friction successive sheets of paper from the paper stack and feeds them into the machine. 在文件复制机或复印机中,通过摩擦把堆叠的纸张从纸堆分开并馈入机器的一种装置。
The tools for pulling a document out of the electronic stack and placing it on the top must also be present and obvious in their functions. 将电子文档从一堆电子文档中取出,并将它放到最顶端的工具也必须功能清晰。