Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
@2fxg 程序里面没有，要理解了自己编写
程序里面在哪一步测得实际标签到镜头距离了啊，为什么找不到？