说明：  vision8.2的应急许可证 打开开始菜单——所有程序——Cognex——Cognex Software Licensing Center目录下面的Cognex Software Licensing Center康耐视软件许可中心软件。 选择备份或恢复安装的许可证，在右边选择恢复。 在弹出的文件选择对话框中选中需要恢复的许可证文件。
(vision8.2,Emergency Permit Open the Start Menu - All Programs - Cognex - Cognex Software Licensing Center software under the Cognex Software Licensing Center directory. Select the license to back up or restore the installation, and select Restore on the right. In the pop-up File Selection dialog box, select the license file that needs to be restored.)